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  1. Professor Muttukrishnan Rajarajan
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portrait of Professor Muttukrishnan Rajarajan

Professor Muttukrishnan Rajarajan

Professor of Security Engineering

School of Mathematics, Computer Science & Engineering, Department of Electrical & Electronic Engineering

Contact Information

Contact

Visit Professor Muttukrishnan Rajarajan

C137, Tait Building

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Postal Address

City, University of London
Northampton Square
London
EC1V 0HB
United Kingdom

About

Background

Raj received his BEng and PhD degrees from City University London in 1994 and 1999 respectively. From 1999 he worked at City University London as a Research Fellow. In August 2000 he moved to Logica as a Telecommunication Consultant. After a few years in the industry Raj is now a Professor of Security Engineering. He is also the Programme Director for the Engineering with Management and entrepreneurship programme.

He is a senior member of IEEE, a member of IET and an associate member of the institute of information security professionals (IISP) and a member of Technical Programme Committees for PIERS 2010, eHealth 2010, SECURECOM2011, TrustBus 2011, Digital Economy 2012, IFIPTM 2012 and IFIP SEC 2012. He is also the General Chair of SECURECOMM 2011 in London.

He also sits on the Editorial boards of Springer/ACM Journal on Wireless Networks, Elsevier Journal of Health Policy and Technology and Emerald Journal of Information Management and Computer Security.

Qualifications

PhD Information Engineering, City University London, 1999

Employment

01/2001 - to date City University London, Reader
08/1998 Research Fellow
01/2000 Logica

Other appointments

09/2012 External Examiner Middlesex University Computer Science
06/2012 Academic Member of National Crime Agency (e-crime Unit)
02/2012 Part of the UK Cabinet Office’s initiative on Digital Government – Identity Assurance
08/2010 Visiting Research Fellow BT Security Research Laboratories
06/2010 Advisor to Government of India Cyber Security Labs
04/2010 Member of the Connected Health Think Tank

Member of professional bodies

01/1999 IEEE, SM
01/2011 IET, M
01/2011 Institute of Information Security Professionals (IISP), AM

Research

Research Summary

Raj leads the Information Security Group (ISG) at City University London which carries out research in the following domains:

- Cyber Security
- Wireless Security
- Cloud Security & Trust
- Identity Management and Access Control
- Multi-factor Authentication
- Lightweight Cryptography

Information Security Group has received over GBP 1.5M in the last 2 years to carry out research and commercialisation activities in information security and cybercrime. The group's innovation in the area of mobile banking security has attracted a lot of interest from major content and mobile providers and currently they are partnering with Decimal Technologies to commercialise this research. Strong research collaboration exists between the BT Security Research at Adastral Park, Ipswich and City University London security research team. They also have strong international links with the Centre for the Advancement of Computing (C-DAC), India in the areas of Grid Security, cybercrime and Critical National Infrastructure protection. Moreover, they collaborate with several other security groups across the world including the Indian Institute of Technology, Kanpur, Indian Institute of Technology, Gandhinagar, Birla Institute of Technology, Hyderabad, Punjab Engineering College, IIIT Bangalore and Indian Institute of Science Bangalore. Furthermore Information Security Group has strong industrial links with IBM Research labs, Infosys, SecureMatrix, Cisco, AirTight Networks, E&Y, Accenture and other major IT and Security industries.

The research group was involved in the organisation of the First International conference in Information Security and Digital Forensics in September 2009, ISDF 2009, e-Health 2009 in Istanbul, Turkey, IEEE conference on collaborative security technologies.

Publications

Chapters (6)

  1. Veluru, S., Rahulamathavan, Y., Gupta, B.B. and Rajarajan, M. (2015). Privacy preserving text analytics: Research challenges and strategies in name analysis. Standards and Standardization: Concepts, Methodologies, Tools, and Applications (pp. 1415–1435). ISBN 978-1-4666-8112-5.
  2. Veluru, S., Rahulamathavan, B., Gupta, B. and Rajarajan, M. (2014). Privacy Preserving Text Analytics: Research Challenges and Strategies in Name Analysis: Securing Cloud-Based Databases with Biometric Applications. Advances in Information Security, Privacy and Ethics USA: IGI Global.
  3. Rahulamathavan, Y., Moonsamy, V., Batten, L., Shunliang, S. and Rajarajan, M. (2014). An analysis of tracking settings in blackberry 10 and windows phone 8 smartphones. (pp. 430–437). ISBN 978-3-319-08343-8.
  4. Pawar, P.S., Rajarajan, M., Dimitrakos, T. and Zisman, A. (2014). Trust assessment using cloud broker. (pp. 237–244). ISBN 978-3-662-43812-1.
  5. Veluru, S., Rahulamathavan, Y., Gupta, B.B. and Rajarajan, M. (2014). Privacy preserving text analytics: Research challenges and strategies in name analysis. Handbook of Research on Securing Cloud-Based Databases with Biometric Applications (pp. 364–385). ISBN 978-1-4666-6560-6.
  6. Weerasinghe, D., Rakocevic, V. and Rajarajan, M. (2010). Security framework for mobile banking. In Kotsis, G., Taniar, D., Pardede, E., Awan, I., Saleh, I. and Khalil, I. (Eds.), (pp. 421–424). ACM ISBN 978-1-4503-0440-5.

Conference Papers and Proceedings (178)

  1. Shyamasundar, R.K., Kumar, N.V.N. and Rajarajan, M. (2017). Information-flow control for building security and privacy preserving hybrid clouds. .
  2. Fahad, L.G. and Rajarajan, M. (2016). Anomalies detection in smart-home activities. .
  3. Reddy, J.M., Hota, C. and Rajarajan, M. (2016). Behavior-based P2P traffic identification using fuzzy approach. .
  4. Rahulamathavan, Y., Rajarajan, M., Rana, O.F., Awan, M.S., Burnap, P. and Das, S.K. (2016). Assessing data breach risk in cloud systems. .
  5. Rajarajan, M., Sahir, F. and Gilani, L. (2015). Key features identification for activity recognition in smart homes. IEEE International Conference on Communications (ICC) 8 Jun 2015 – 12 Feb 2015, London.
  6. Arunkumar, S., Srivatsa, M., Sensoy, M. and Rajarajan, M. (2015). Global attestation of location in mobile devices. .
  7. Adamsky, F., Khayam, S.A., Jäger, R. and Rajarajan, M. (2015). P2P File-Sharing in Hell: Exploiting BitTorrent Vulnerabilities to Launch Distributed Reflective DoS Attacks. .
  8. Arunkumar, S., Soyluoglu, B., Sensoy, M., Srivatsa, M. and Rajarajan, M. (2015). GeoSpatial access control for mobile devices. .
  9. Fahad, L.G., Tahir, S.F. and Rajarajan, M. (2015). Feature selection and data balancing for activity recognition in smart homes. .
  10. Raoufi, N., Surre, F., Rajarajan, M., Sun, T. and Grattan, K.T.V. (2015). Enhanced stability and re-usability of the optical sensor for ph monitoring using a layer-by-layer deposition technique. .
  11. Fahad, L.G., Ali, A. and Rajarajan, M. (2015). Learning models for activity recognition in smart homes. .
  12. Olabelurin, A., Kallos, G., Veluru, S. and Rajarajan, M. (2015). Multi-agent based framework for time-correlated alert detection of volume attacks. .
  13. Olabelurin, A., Veluru, S., Healing, A. and Rajarajan, M. (2015). Entropy clustering approach for improving forecasting in DDoS attacks. .
  14. Rahulamathavan, Y. and Rajarajan, M. (2015). Hide-and-seek: Face recognition in private. .
  15. Naval, S., Laxmi, V., Gaur, M.S., Raja, S., Rajarajan, M. and Conti, M. (2015). Environment–reactive malware behavior: Detection and categorization. .
  16. Zaidi, K., Milojevic, M., Rakocevic, V. and Rajarajan, M. (2015). Data-centric rogue node detection in VANETs. .
  17. Faruki, P., Bharmal, A., Laxmi, V., Gaur, M.S., Conti, M. and Rajarajan, M. (2015). Evaluation of android anti-malware techniques against dalvik bytecode obfuscation. .
  18. Sajjad, A., Rajarajan, M. and Dimitrakos, T. (2015). A low-overhead secure communication framework for an inter-cloud environment. .
  19. Raruki, P., Laxmi, V., Gaur, M., Ganmoor, V. and Rajarajan, M. (2014). Evaluation of Andriod Malware Techniques against Dalvik Bytecode obfuscation. IEEE Trustcom 24-26 September, Beijing, China.
  20. Shittu, R., Healing, A., Ghanea-Hercock, R., Bloomfiled, R. and Rajarajan, M. (2014). A New Metric for Prioritising Intrusion Alerts Using Correlation and Outlier Analysis. 39th IEEE Conference on Local Computer Networks September, Edmonton, Canada.
  21. Li, F., Rahulamathavan, Y. and Rajarajan, M. (2014). Lightweight Static and Dynamic Attributes Based Access Control Scheme for Secure Data Access in Mobile Environment. 39th IEEE Conference on Local Computer Networks September, Edmonton, Canada.
  22. Asif, W., Qureshi, H.K., Rajarajan, M. and Lestas, M. (2014). CBDI: Combined Banzhaf & diversity index for finding critical nodes. .
  23. Idrees, F. and Rajarajan, M. (2014). War against mobile malware with cloud computing and machine learning forces. .
  24. Shittu, R., Healing, A., Ghanea-Hercock, R.A., Bloomfield, R.E. and Rajarajan, M. (2014). OutMet: A new metric for prioritising intrusion alerts using correlation and outlier analysis. .
  25. Sharbaf, M.S. (2014). A New Perspective to Information Security: Total Quality Information Security Management. .
  26. Rahulamathavan, Y., Rajarajan, M., Pawar, P.S., Rana, O.F., Burnap, P. and Spanoudakis, G. (2014). Analysing security requirements in cloud-based service level agreements. .
  27. Adnan, M., Lima, A., Rossi, L., Veluru, S., Longley, P., Musolesi, M. and Rajarajan, M. (2014). The Uncertainty of Identity Toolset: Analysing digital traces for user profiling. .
  28. Idrees, F. and Rajarajan, M. (2014). Investigating the android intents and permissions for malware detection. .
  29. Naval, S., Laxmi, V., Gupta, N., Gaur, M.S. and Rajarajan, M. (2014). Exploring worm behaviors using DTW. .
  30. Arunkumar, S., Srivatsa, M. and Rajarajan, M. (2014). Location security- Where to enforce? .
  31. Adnan, M., Rosi, L., Veluru, S., Mouseli, M., Longley, P. and Rajarajan, M. (2014). Using Digital Traces for User Profiling: the Uncertainty of Identity Toolset. ACM Security in Information and Networks, (SIN 2014) Glasgow, UK.
  32. Asif, W., Qureshi, H.K., Rajarajan, M. and Lestas, M. (2014). CBDI: Combined Banzhaf & diversity index for finding critical nodes. .
  33. Gupta, N., Naval, S., Laxmi, V., Gaur, M.S. and Rajarajan, M. (2014). P-SPADE: GPU accelerated malware packer detection. .
  34. Adamsky, F., Khayam, S.A., Jager, R. and Rajarajan, M. (2014). Who is Going to Be the Next BitTorrent Peer Idol? .
  35. Fahad, L.G., Tahir, S.F. and Rajarajan, M. (2014). Activity recognition in smart homes using clustering based classification. .
  36. Veluru, S., Rahulamathavan, Y., Manandhar, S. and Rajarajan, M. (2014). Correlated community estimation models over a set of names. .
  37. Idrees, F., Rajarajan, M. and Memon, A.Y. (2013). Framework for distributed and self-healing hybrid intrusion detection and prevention system. .
  38. Zaidi, K., Rahulamathavan, Y. and Rajarajan, M. (2013). DIVA - Digital Identity in VANETs: A multi-authority framework for VANETs. .
  39. Olabelurin, A., Kallos, G., Xiang, Y., Bloomfield, R., Veluru, S. and Rajarajan, M. (2013). Time correlated anomaly detection based on inferences. .
  40. Fahad, L.G., Ali, A. and Rajarajan, M. (2013). Long term analysis of daily activities in a smart home. .
  41. Veluru, S., Rahulamathavan, Y., Viswanath, P., Longley, P. and Rajarajan, M. (2013). E-mail address categorization based on semantics of surnames. .
  42. Pawar, P.S., Rajarajan, M., Dimitrakos, T. and Zisman, A. (2013). Trust Model for Cloud Based on Cloud Characteristics. .
  43. Asif, W., Qureshi, H.K. and Rajarajan, M. (2013). Variable rate adaptive modulation (VRAM) for introducing small-world model into WSNs. .
  44. Li, F., Rahulamathavan, Y., Rajarajan, M. and Phan, R.C.W. (2013). Low complexity multi-authority attribute based encryption scheme for mobile cloud computing. .
  45. Rajarajan, M., Sajjad, A., Zisman, A., Nair, S.K. and Dimitrakos, T. (2012). Secure communication using dynamic VPN provisioning in an Inter-Cloud environment. ICON 2012: 18th IEEE International Conference on Networks 12-14 December, Singapore.
  46. Adamsky, F., Khayam, S., Jäger, R. and Rajarajan, M. (2012). Security analysis of the micro transport protocol with a misbehaving receiver. 2012 International Conference on Cyber-Enabled Distributed Computing and Knowledge Discover 10-12 October, Sanya, China.
  47. Pawar, P.S., Nair, S.K., El-Mousaa, F., Dimitrakos, T., Rajarajan, M. and Zisman, A. (2012). Opinion Model Based Security Reputation Enabling Cloud Broker Architecture. CloudComp 2012 - 3rd International Conference on Cloud Computing 24-26 September, Vienna, Austria.
  48. Modi, C.N., Patel, D.R., Patel, A. and Rajarajan, M. (2012). Integrating Signature Apriori based Network Intrusion Detection System (NIDS) in Cloud Computing. .
  49. Raoufi, N., Surre, F., Sun, T., Grattan, K.T.V. and Rajarajan, M. (2012). Improvement of optical properties of pH-sensitive nanolayers coating deposited using Layer-by-Layer technique. .
  50. Rajarajan, M. (2012). Novel framework for secure mobile financial services. .
  51. Shittu, R., Healing, A., Bloomfield, R.E. and Rajarajan, M. (2012). Visual Analytic Agent-Based Framework for Intrusion Alert Analysis. .
  52. (2012). Security and Privacy in Communication Networks - 7th International ICST Conference, SecureComm 2011, London, UK, September 7-9, 2011, Revised Selected Papers. .
  53. Rajarajan, M., Sajjad, A., Zisman, A., Nair, S.K. and Dimitrakos, T. (2011). Dynamic virtual private network provisioning from multiple cloud infrastructure service providers. 4th European Conference, ServiceWave 2011 26-28 October, Poznan, Poland.
  54. Rajarajan, M., Li, F., Weerasinghe, D. and Patel, D. (2011). An attribute based access control model for mobile environments using XACML. 3rd International conference on mobile computing, applications and services, (MobiCase 2011) 24-27 October, Los Angels, CA, USA.
  55. Rajarajan, M., Dass, R. and Pal, S. (2011). Security framework for addressing the issues of trust on mobile financial services. 7th International Conference on Next Generation Web Services Practices (NWeSP 2011) 19-21 October, Salamanca, Spain.
  56. Rajarajan, M., Adamsky, F., Khan, H., Khayam, S.A. and Jager, R. (2011). Destabilizing BitTorrent’s clusters to attack high bandwidth lechers. 18th ACM Conference on Computer and Communications Security (CCS 2011) 17-21 October, SWISSÔTEL Chicago, Chicago, IL, USA.
  57. Rajarajan, M. and Weerasinghe, D. (2011). Secure trust delegation for sharing patient medical records in a mobile environment. International Conference on Wireless Communications, Networking and Mobile Computing, WiCom 2011 23-25 September, China.
  58. Rajarajan, M., Hota, C., Giridhar, G.K. and Mohanty, H. (2011). Peer-to-peer overlay infrastructure with priority based search. 4th International Conference in recent trends in Computing, Communications and Information Technologies 9-11 September, India.
  59. Li, F., Weerasinghe, D., Patel, D.R. and Rajarajan, M. (2011). An User-Centric Attribute Based Access Control Model for Ubuquitous Environments. .
  60. Adamsky, F., Khan, H., Rajarajan, M., Khayam, S.A. and Jäger, R. (2011). Poster: Destabilizing BitTorrent's clusters to attack high bandwidth leechers. .
  61. Qureshi, H.K., Rizvi, S., Saleem, M., Khayam, S.A., Rakocevic, V. and Rajarajan, M. (2011). A reliable and energy efficient topology control protocol for wireless sensor networks. .
  62. Sanka, S., Hota, C. and Rajarajan, M. (2010). Secure data access in cloud computing. IEEE 4th International conference on Internet Multimedia systems architectures and applications, IMSAA 2010 15-17 December, Bangalore, India..
  63. Nair, S.K., Porwal, S., Dimitrakos, T., Ferrer, A.J., Tordsson, J., Sharif, T., Sheridan, C., Rajarajan, M. and Khan, A.U. (2010). Towards secure cloud bursting, brokerage and aggregation. IEEE European conference on Web Services 1-3 December, Cyprus.
  64. Rajarajan, M., Lei, F., Weerasinghe, D. and Lyons, W. (2010). An attribute based access control model for mobile environment using XACML. IEEE International Conference on Intelligent Networks and Computing 25-27 November, Kuala Lumpur, Malaysia.
  65. Arunkumar, S., Raghavendra, A., Weerasinghe, D., Patel, D. and Rajarajan, M. (2010). Policy extension for data access control. 6th Workshop on Secure Network Protocols 5-7 October, Kyoto, Japan.
  66. Köhnen, C., Überall, C., Adamsky, F., Rakočević, V., Rajarajan, M. and Jäger, R. (2010). Enhancements to Statistical Protocol IDentification (SPID) for self-organised QoS in LANs. 19th International conference on Communication Networks 2-5 August, Zurich, Switzerland.
  67. Patel, R., Borisaniya, B., Patel, A., Patel, D., Rajarajan, M. and Zisman, A. (2010). Comparative analysis of formal model checking tools for security protocol verification. The Third International Conference on Network Security & Applications (CSNA) 23-25 July, Chenni, India.
  68. Köhnen, C., Überall, C., Rakočević, V., Rajarajan, M. and Jäger, R. (2010). QoSiLAN - A heterogeneous approach to quality of service in local area networks. 13-19 June, Athens/Glyfada, Greece.
  69. Mohanty, V., Moliya, D., Hota, C. and Rajarajan, M. (2010). Secure Anonymous Routing for MANETs Using Distributed Dynamic Random Path Selection. 14th Pacific-Asia Workshop on Intelligence and Security Informatics (PAISI'2010), PAKDD 2010 June, Hyderabad.
  70. Weerasinghe, D., Rajarajan, M. and Rakocevic, V. (2010). Security Protection on Trust Delegated Data in Public Mobile Networks. .
  71. Qureshi, H.K., Rizvi, S., Saleem, M., Khayam, S.A., Rajarajan, M. and Rakocevic, V. (2010). An energy efficient Clique-based CDS discovery protocol for wireless sensor networks. .
  72. Qureshi, H.K., Rajarajan, M., Rakocevic, V., Iqbal, A., Saleem, M. and Khayam, S.A. (2009). A cycle-based clustering algorithm for wireless sensor networks. September.
  73. Uberall, C., Muttukrishnan, R., Rakocevic, V., Jager, R. and Kohnen, C. (2009). RECOMMENDATION INDEX FOR DVB CONTENT USING SERVICE INFORMATION. July, New York City.
  74. Rajarajan, M., Weerasinghe, D. and Rakocevic, V. (2009). Federated Trust Negotiation for Mobile Services. International Conference On Security and Identity Management (SIM) 10-11 May, Ahmedabad, India.
  75. Rajarajan, M. (2009). Cyber Crime: A Digital War. Conference on Security and Identity Management (SIM), Ahmedabad 10-11 May, India.
  76. Weerasinghe, D., Rajarajan, M. and Rakocevic, V. (2009). Trust delegation for medical records access using public mobile networks. 1-3 April, London, England.
  77. Rajarajan, M. (2009). Security, Privacy and Trust in Mobile Healthcare. 3rd International Workshop on connectivity, mobility and patient care 31 March, London.
  78. Weerasinghe, D., Rajarajan, M. and Rakocevic, V. (2009). Trust delegation for medical records access using public mobile networks. .
  79. Weerasinghe, D., Rajarajan, M. and Rakocevic, V. (2008). Device Data Protection in Mobile Healthcare Applications. The First International Conference on Electronic Healthcare in the 21st century 8 September, London, England.
  80. Rajarajan, M., Dar, T., Themistos, C., Rahman, B.M.A., Grattan, K.T.V. and Irudayaraj, J. (2008). Design and optimization of surface plasmon resonance based biosensor for the detection of E.coli. Integrated Photonics and Nanophotonics Research and Applications (IPNRA) 13-16 July, Boston Marriott Copley Place Hotel in Boston, Massachusetts, USA.
  81. Rajarajan, M., Themistos, C., Rahman, B.M.A. and Grattan, K.T.V. (2008). Surface plasmon resonance based biosensors for biophotonic applications. Integrated Photonics and Nanophotonics Research and Applications (IPNRA) 8-11 July, Hilton Salt Lake City, Utah, USA.
  82. Spackova, B., Piliarik, M., Kvasnicka, P., Themistos, C., Rajarajan, M. and Homola, J. (2008). Novel concept of multi-channel fiber optic surface plasmon resonance sensor. Europtrode IX 30 Mar 2008 – 2 Apr 2008, Dublin.
  83. Weerasinghe, D., Elmufti, K., Rajarajan, M. and Rakocevic, V. (2008). Patient's privacy protection with anonymous access to medical services. 29-31 January, Tampere, Finland.
  84. Elmufti, K., Weerasinghe, D., Rajarajan, M., Rakocevic, V. and Khan, S. (2008). Timestamp Authentication Protocol for Remote Monitoring in eHealth. Workshop on Connectivity, Mobility and Patients’ Comfort (CMPC) in Pervasive Healthcare Conference 29-31 January, Tampere Finand.
  85. Qureshi, H.K., Shahzad, K., Khayam, S.A., Rajarajan, M. and Rakocevic, V. (2008). Complexity reduction of Markov channel models for wireless networks using graph theory. .
  86. B.M.A. Rahman, , C. Themistos, , N. Kejalakshmy, , M. Rajarajan, , T. Wongcharoen, and K.T.W. Grattan, (2007). Characterization of low-loss waveguides for Terahertz application. Invited paper, ISMOT 2007 (11th International Symposium on Microwave and Optical Technology) December, Rome, Italy.
  87. Rajarajan, M., Themistos, C., Rahman, B.M.A. and Grattan, K.T.V. (2007). THz frequency radiation in Silver/Polystyrene coated hollow glass waveguides. Integrated Photonics and Nanophotonics Research and Applications (IPNRA) 8-11 July, Hilton Salt Lake City, Utah, USA.
  88. Rahman, B.A., Themistos, C., Rajarajan, M. and Grattan, K.T.V. (2007). Characterization of surface-plasmon resonance based sensors for biphotonic applications. Integrated Photonics and Nanophotonics Research and Applications, paper ITuB2 July, Salt Lake City, Utah.
  89. Rahman, B.A., Kabir, A.K.M.S., Namassivayane, K., Rajarajan, M. and Grattan, K.T.V. (2007). Characterization of single mode operation of PCF using finite element method. Integrated Photonics and Nanophotonics Research and Applications, paper ITuH5 July, Salt Lake City, Utah.
  90. Rajarajan, M., Themistos, C., Rahman, B.M.A. and Grattan, K.T.V. (2007). Characteristics of biophotonic devices using the finite element method. Progress in Electromagnetic Research Symposium March, Beijing, China.
  91. B.M.A. Rahman, , A.K.M.S. Kabir, , N. Kejalakshmy, , I. Wijeratne, , M. Rajarajan, and K. T. V. Grattan, (2006). solutions of photonic crystal fibres by using the finite element method. Int. Conference on Computers and Devices for Communication, CODEC 06 18-21 December, Kolkata India.
  92. J. A. MacDonald, , K. Elmufti, , D. Weerasinghe, , M. Rajarajan, , V. Rakocevic, and S. Khan, (2006). A Web Services Shopping Mall for Mobile Users. 4-6 December, Zurich, Switzerland.
  93. B M Azizur Rahman, , C Themistos, , M Rajarajan, and K T V Grattan, (2006). Metal-clad waveguides at Terahertz frequencies. Invited paper, Photonics 2006 December, Hyderabad, India.
  94. K. Elmufti, , D. Weerasignhe, , M. Rajarajan, , V. Rakocevic, and S. Khan, (2006). Privacy in Mobile Web Services eHealth. 1st International Conference on Pervasive Computing Technologies for Healthcare November, Innsbruck, Austria.
  95. Weerasinghe, D., Elmufti, K., Rajarajan, M. and Rakocevic, V. (2006). XML security based access control for healthcare information in mobile environment. International workshop in Security and Privacy in Mobile Healthcare (PMHCS) November, Innsbruck, Austria.
  96. Elmufti, K., Weerasinghe, D., Rajarajan, M., Rakocevic, V. and Khan, S. (2006). Privacy in mobile Web services eHealth. International workshop in Security and Privacy in Mobile Healthcare (PMHCS) November, Innsbruck, Austria.
  97. Rahman, B.A., Kabir, AKMS, , Namassivayane, K, , Wijeratne, I., Rajarajan, M. and Grattan, K.T.V. (2006). Characterizations of photonic crystal fibers by using a full-vectorial finite element method. Conference on Photonic Crystals and Photonic Crystal Fibers for Sensing Applications II 3 October, Boston MA.
  98. Rajarajan, M., Themistos, C., Rahman, B.M.A. and Grattan, K.T.V. (2006). Design and characterization of biophotonic devices for medical applications. Recent Advances in Fibre Optics and Photonics August, Roorkee, India.
  99. B.M.A. Rahman, , A. Agrawal, , S.S.A. Obayya, , A.K.M.S. Kabir, , K. Namassivayane, , M. Rajarajan, and K T V Grattan, (2006). Finite element based-numerical method for photonic devices. OWTNM- International Conference on Optical waveguide theory and numerical modelling 20-21 April, Varese, Italy.
  100. Rahman, B.M.A., Kabir, A.K.M.S., Vaghjiani, M., Wijeratne, I.N.M., Sahota, G.S., Rajarajan, M. and Grattan, K.T.V. (2006). Modal solution of photonic crystal fibers by using a full-vectorial finite element method. Conference on Photonic Crystal Materials and Devices IV 23 January, San Jose, California.
  101. Rajarajan, M., Kabir, A.K.M.S., Rahman, B.M.A., Namassivayam, K., Wijeratne, I. and Grattan, K.T.V. (2006). Characterization of photonic crystal fibers by using a full-vectorial finite element method. .
  102. MacDonald, J.A., Elmufti, K., Weerasinghe, D., Rajarajan, M., Rakocevic, V. and Khan, S. (2006). A Web Services Shopping Mall for Mobile Users. .
  103. Rahman, B.M.A., Themistos, C., Rajarajan, M. and Grattan, K.T.V. (2006). Surface plasmon modes for metal-clad Terahertz waveguides. .
  104. B M Azizur Rahman, , A K M Saiful Kabir, , M Rajarajan, and K T V Grattan, (2005). Rigorous Characterization of Photonic Crystal Fibres by using the Finite Element Method. Invited paper, Deradun ICOL December.
  105. B M A Rahman, , T Wongcharoen, , N Somasiri, , R Abdallah, , M Rajarajan, and K T V Grattan, (2005). Characterization of Photonic Guided-wave Devices by using the Finite Element Method. Invited Paper, Optical waveguide Theory and Numerical Modelling July, Sydney, Australia.
  106. Khan, S., Elmufti, K., Rakocevic, V. and Rajarajan, M. (2005). Authentication Phase Protocol for an M-Commerce Application Using Oasis Soap Message Security Standard. 30 Mar 2005 – 1 Apr 2005, Lancaster University,.
  107. B M A Rahman, , S S A Obayya, , N Somasiri, , M Rajarajan, , F Abdelmalek, and K T V Grattan, (2005). Polarization issues in optical guided-wave devices and systems. Invited Paper, Computational Electromagnetics, IEE meeting March, Nottingham.
  108. Rahman, B.A., B M A Rahman, , N Somasiri, , M Rajarajan, and K T V Grattan, (2005). Polarization issues in photonic devices and systems. Invited Paper, Computational Photonics, Inst. Physics February, Glasgow.
  109. Rajarajan, M., Obayya, S.S.A., Rahman, B.M.A. and Grattan, K.T.V. (2005). Tapered Semiconductor amplifiers. Semiconductor Optoelectronics Conf Cardiff, UK.
  110. Rajarajan, M., Rahman, B.M.A., Abdallah, R.A., Obayya, S.S.A. and Grattan, K.T.V. (2005). Mode beating in tapered high-power deeply-etched semiconductor amplifiers. .
  111. Rajarajan, M., Rahman, B.M.A., Kabir, A.K.M.S. and Grattan, K.T.V. (2005). Modal solutions of photonic crystal fibers by using the H-field finite element method. .
  112. Rajarajan, M., Rahman, B.M.A., Kabir, A.K.M.S. and Grattan, K.T.V. (2005). Modal solutions of photonic crystal fibers by using the H-field finite element method. Conference on Micro- and Nanotechnology - Materials , Processes, Packaging, and Systems II 13 Dec 2004 – 15 Dec 2004, Sydney, AUSTRALIA.
  113. Rajarajan, M., Rahman, B.M.A., Wongcharoen, T., Somasiri, N., Abdullah, R., Kabir, A.S.F. and Grattan, K.T.V. (2004). Rigorous design optimisation of photonic devices by using the finite element method. Invited paper in Asia Pacific Microwave Conf December, Delhi, India.
  114. B M Azizur Rahman, , Riyadh A Abdallah, , Salah S A Obayya, , K T V Grattan, and M Rajarajan, (2004). Mode beating in tapered high-power deeply-etched semiconductor amplifiers. Int. Conf. Applied Photonics Tech , Photonics North September, Ottawa.
  115. Rahman, B.A., Themistos, C., rajarajan, M., Grattan, K.T.V., Kalli, K. and Komodromos, M. (2004). Design issues for directional coupler-based optical microring filters on InP waveguides. OSA Integrated Photonic Research, paper no. JWB34 June, San Francisco.
  116. Rajarajan, M., Rahman, B.M.A., Abdullah, R.A., Obayya, S.S.A. and Grattan, K.T.V. (2004). Mode beating in tapered high-power deeply-etched semiconductor amplifiers. Conf. Optics & Photonics Integrated Circuits,Euro Opto 2004 April, Strasbourg.
  117. B M A Rahman, , T Wongcharoen, , S Haxha, , C Themistos, , M Rajarajan, and K T V Grattan, (2004). Rigorous Design Optimizations of Photonic Devices. Waveguide Modelling workshop 22-23 March, Ghent.
  118. B. M. A. Rahman, , T. Wongcharoen, , N. Somasiri, , M. Rajarajan, , C. Themistos, and K. T. V. Grattan, (2004). Characterization of polarization related issues in optoelectronic systems. Invited paper 9 January, Bangkok, Thailand.
  119. Rajarajan, M., Rahman, B.M.A., Wongcharoen, T., Themistos, C., Ladele, E.O., Aslam, M.S., Somasiri, N., Abdullah, R., Kabir, A.S.F. and Grattan, K.T.V. (2004). Finite element characterization of photonic devices for optical communications. Invited paper, Int. Conf. Components and Devices for Communications (CODEC 04) 1-3 January, Calcutta, India.
  120. Rajarajan, M., Rahman, B.M.A., Saiful Kabir, A.K.M., Irfan Ahmed, M. and Grattan, K.T.V. (2004). Full vectorial modal solutions for photonic crystal fibres by use of the finite element method. POWAG Cardiff, UK.
  121. Rajarajan, M., Rahman, B.M.A., Kabi, A.K.M.S., Ahmed, M.I. and Grattan, K.T.V. (2004). Rigorous modal solutions of photonic crystal fibers by using the full vectorial H-field finite element method. IEEE Conf. Oman.
  122. Rajarajan, M. and Rakocevic, V, (2004). QoS Constraints in Bluetooth-Based Wireless Sensor Networks. .
  123. Themistos, C., Kalli, K., Komodromos, M., Rajarajan, M., Rahman, B.M.A. and Grattan, K.T.V. (2004). Design issues for directional coupler- And MMI-based optical microring resonator filters on InP. .
  124. Rahman, B.M.A., Kabir, A.K.M.S., Ahmed, M.I., Sahota, G.S., Rajarajan, M. and Grattan, K.T.V. (2004). Modal hybridism of polarization maintaining photonic crystal fibers by using a full-vectorial finite element method. .
  125. Rahman, B.M.A., Kabir, A.K.M.S., Alam, S., Somasiri, N., Ahmed, M.I., Rajarajan, M. and Grattan, K.T.V. (2004). Rigorous analysis of photonic crystal fibers by using a full vectorial H-field-based finite element method. .
  126. Rahman, B.M.A., Wongcharoen, T., Obayya, S.S.A., Haxha, S., Somasiri, N., Themistos, C., Rajarajan, M. and Grattan, K.T.V. (2003). Characterization of photonic devices by finite element method. 7th Joint Conference on Information Sciences (JCIS) 26-30 September, Cary, North Carolina.
  127. Rajarajan, M., Rahman, B.M.A., Wongcharoen, T., Themistos, C., Obayya, S.S.A., Anwar, N., Somasiri, N., Haxha, S. and Grattan, K.T.V. (2003). Rigorous design optimization of photonic devices by finite elements. Invited paper April, Cairo, Egypt.
  128. B M A Rahman, , S S A Obayya, , N Somasiri, , M Rajarajan, , C Themistos, and K T V Grattan, (2003). Polarization issues in optical waveguides and optoelectronic systems. Workshop on Optical Waveguide Modelling March, Prague.
  129. Rahman, B.M.A., Obayya, S.S.A., Somasiri, N., Rajarajan, M. and Grattan, K.T.V. (2003). Polarization issues in photonics. .
  130. Rahman, B.M.A., Obayya, S.S.A., Somasiri, N., Rajarajan, M., Themistos, C. and Grattan, K.T.V. (2003). Polarization issues in optoelectronic systems. .
  131. Themistos, C., Rajarajan, M., Kalli, K., Komodromos, M., Rahman, B.M.A. and Grattan, K.T.V. (2003). Design issues for optical microring filters on deeply etched GaInAsP-InP waveguides. .
  132. Rajarajan, M., Themistos, C., Kalli, K., Komodromos, M., Rahman, B.M.A. and Grattan, K.T.V. (2003). Design issues for an ultra compact tapered MMI coupler based 3 dB splitter. .
  133. Rahman, B.M.A., Wongcharoen, T., Ladele, E.O., Rajarajan, M., Obayya, S.S.A. and Grattan, K.T.V. (2003). Designs of compact monolithically integrated semiconductor spot-size converters for efficient laser-fiber coupling. .
  134. Rajarajan, M., Rahman, B.M.A., Wongcharoen, T., Haxha, S., Themistos, C. and Grattan, K.T.V. (2002). Rigorous design optimization of photonic devices. Photonics India 2002 December, Bombay.
  135. Rahman, B.A., Wongcharoen, T., Boonthittanont, W., Ladele, E.O., Rajarajan, M., Obayya, S.S.A. and Grattan, K.T.V. (2002). Design of compact monolithically integrated tapered spot-size converters for efficient laser-fiber coupling. IEEE Conf. Electron Device Microwave Optoelectronic 18-19 November.
  136. Rajarajan, M., Rahman, B.M.A., Wongcharoen, T., Boonthittanont, W., Ladele, E.O., Obayya, S.S.A. and Grattan, K.T.V. (2002). Designs of copact monolithically integrated tapered spot-size converters for efficient laser-fiber coupling. EDMO 2002, The 10th IEEE International Symposium on electron Devices for Microwave and Optoelectronic Applications 18-19 November.
  137. Rajarajan, M., Rahman, B.M.A., Wongcharoen, T., Haxha, S., Themistos, C. and Grattan, K.T.V. (2002). Design and optimization photonic devices by use of the finite element method. ICON November, Singapore.
  138. B M A Rahman, , T Wongcharoen, , E O Ladele, , M Rajarajan, , S S A Obayya, and K T V Grattan, (2002). Design of compact monolithically integrated semiconductor spot-size converters for efficient laser-fiber coupling. 19th Congress of the Int. Commission for Optics August, Firenze, Italy.
  139. Rahman, B.A., Themistos, C., Rajarajan, M., Obayya, S.S.A. and Grattan, K.T.V. (2002). Design issues for ultra-compact multimode intereference-based 3dB splitters. IEEE/OSA Integrated Photonic Research,Paper ITHD2 July, Vancouver.
  140. Rajarajan, M., Rahman, B.M.A., Obayya, S.S.A., Somasiri, N., Abdelmalek, F. and Grattan, K.T.V. (2002). Polarization issues in optical guided-wave devices. Tenth Int. Workshop on Optical Waveguide Theory and Numerical Modelling 5-6 April, Nottingham.
  141. Rahman, B.M., Wongcharoen, T., Boonthittanont, W., Ladele, E.O., Rajarajan, M., Obayya, S.S.A., Grattan, K.T.V., IEEE, and IEEE, (2002). Designs of compact monolithically integrated tapered spot-size converters for efficient laser-fiber coupling. .
  142. B M A Rahman, , T Wongcharoen, , S S A Obayya, , N Anwar, , N Somasiri, , M Rajarajan, and K T V Grattan, (2001). Full vectorial analyses of optoelectronic guided-wave devices using the finite element method. Invited paper, First Int Conf Opt. Comm December, Thailand.
  143. Rahman, B.M.A. (2001). Finite element modelling of Photonic Devices. Workshop April, Paderborn, Germany.
  144. Rajarajan, M., Rahman, B.M.A., Grattan, K.T.V. and El-Mikati, H.A. (2000). Design optimisation of compact bends using finite element based numerical methods. Microwave Conference 3-6 December, Asia Pacific.
  145. M Rajarajan, , S A A Obayya, , B M A Rahman, , K T V Grattan, and H A El-Mikati, (2000). Optimization of losses in optical bends using the finite element method. Int. Conf on Fibre Optics and Photonics December, Calcutta.
  146. Rahman, B.A., Gomoluch, J.M., Rajarajan, M. and Grattan, K.T.V. (2000). Characterization of semiconductor Bragg gratings. Asia Pacific Microwave Conf. December, Sydney, Australia.
  147. Rajarajan, M., Themistos, C, , Rahman, B.M.A, and Grattan, K.T.V, (2000). Characterization of multimode interference coupler –based devices for compact WDM components. Progress in Electromagnetic Research Symposium (PIERS) July, Boston, USA.
  148. Rajarajan, M., Rahman, B.M.A, , Obayya, S.S.A, and El-Mikathi, (2000). Full-vectorial FE-based BPM for Photonic Devices. Progress in Electromagnetic Research Symposium (PIERS) July, Boston, USA.
  149. Rajarajan, M., Rahman, B.M.A, , Obayya, S.S.A, , El-Mikathi, H.A, and Grattan, K.T.V, (2000). Design of compact low-loss bends in optical waveguides. Progress in Electromagnetic Research Symposium (PIERS) July, Boston, USA.
  150. Rajarajan, M., Themistos, C., Rahman, B.M.A. and Grattan, K.T.V. (2000). Characterization of MMI and AWG based NxN devices for WDM applications. MELECON 29-31 May, Cyprus.
  151. Rajarajan, M., Obayya, S.S.A., Rahman, B.M.A., Grattan, K.T.V. and El-Mikathi, H.A. (2000). Design of Compact bends using the finite element based beam propagation method. Semiconductor and integrated opto-electronics conference (SIOE) 17-19 April, Cardiff, Wales.
  152. Rahman, B.M.A., Gomoluch, J.M., Rajarajan, M., Grattan, K.T.V. and et al., (2000). Characterization of semiconductor Bragg gratings. PREP 2000 11-13 April, University of Nottingham.
  153. M Rajarajan, , S S A Obayya, , B M A Rahman, , K T V Grattan, and H A El-Mikithai, (2000). Design of compact bends in semiconductor optical waveguides with low radiation and insertion loss. Semiconductor & Integrated Optoelectronics April, Cardiff.
  154. Rahman, B.A., Arasaratnam, P., Rajarajan, M., Grattan, K.T.V., Meyer, M. and Kemper, M. (2000). Rigorous calculation of optical parameters for monolithically integrated semiconductor spot-size converters. Semiconductor & Integrated Optoelectronics April, Cardiff, UK.
  155. Rahman, B.M.A., Anwar, N., Meyer, M., Rajarajan, M., Themistos, C., Wongcharoen, T. and Grattan, K.T.V. (2000). Finite element modelling of photonic devices. .
  156. Rahman, B.M.A., Wongcharoen, T., Rajarajan, M. and Grattan, K.T.V. (2000). Spot-size conversion and near-circular far-field profile for efficient laser-fiber coupling. .
  157. Rajarajan, M., Obayya, S.S.A., Rahman, B.M.A., Grattan, K.T.V. and El-Mikati, H.A. (2000). Design and optimisation of compact optical bends. .
  158. Rahman, B.M.A., Arasaratnam, P., Kemper, M., Wongcharoen, T., Meyer, M., Rajarajan, M. and Grattan, K.T.V. (1999). Rigorous study of near and far fields for spot-size converted semiconductor lasers. IEEE EDMO November, King’s college.
  159. Rajarajan, M., Rahman, B.M.A, , Arasaratnam, P.K., , Grattan, K.T.V., , Wongcharoen, T., and Meyer, M., (1999). Transmission reflection alignment tolerance and far-field profiles of spot-size converters. IEEE/OSA Topical Meeting on Integrated Photonic Research July, Santa Barbara.
  160. Rajarajan, M., Rahman, B.M.A, , Grattan, K.T.V, , Obayya, S.S.A, and El-Mikati, H.A, (1999). Characterization of ultrashort low-loss waveguidebends for compact photonic integrated circuits. IEEE/OSA Topical Meeting on Integrated Photonic Research July, Santa Barbara.
  161. Rahman, B.A., Rajarajan, M., Anwar, N., Themistos, C., Woncharoen, T. and Grattan, K.T.V. (1999). Finite element modelling of photonic devices. Photonics 99, Devices & Systems 21-23 June, Prague.
  162. Rahman, B.A., Rajarajan, M., Obayya, S.S.A., Fernandez, F.A. and Grattan, K.T.V. (1999). Leaky modes and radiation loss in bent optical waveguides. PIERS March, Taiwan.
  163. Rahman, B.A., Rajarajan, M., Obayya, S.S.A., Fernandez, F.A. and Grattan, K.T.V. (1999). Leaky modes and radiation loss in bent optical waveguides. PIERS March, Taiwan.
  164. Rajarajan, M., Rahman, B.M.A, and Grattan, K.T.V., (1999). A novel approach for passive duplexers using the multimode interference devices. Integrated Optic Devices III,SPIE Photonics West 23-19 January, Sanjose, California, USA.
  165. Rajarajan, M., Meyer, M., Wongcharoen, T., Rahman, B.M.A. and Grattan, K.T.V. (1999). Design and characterization of spot-size expanders for improved laser-fiber coupling. .
  166. Rajarajan, M., Obayya, S.S.A., Fernandez, F.A., Rahman, B.M.A. and Grattan, K.T.V. (1999). Rigorous study of leaky modes in optical waveguides. .
  167. Rajarajan, M., Obayya, S.S.A., Rahman, B.M.A., Grattan, K.T.V. and El-Mikati, H.A. (1999). Novel polarization-independent optical bends for compact photonic integrated circuits. .
  168. Rajarajan, M., Wongcharoen, T, , Rahman, B.M.A., and Grattan, K.T.V, (1998). Spot-size conversion using uniform waveguide sections for efficient laser-fibre coupling. Photonics- 98, IIT 14-18 December, Delhi, India.
  169. Rajarajan, M., Rahman, B.M.A, , Wongcharoen, T, , Katsriku, F, , Buah, P.A, , Meyer, M, and Grattan, K.T.V, (1998). Rigorous characterisation of photonic devices using the finitelement method. Invited paper, Photonics India 98 14-18 December, Delhi, India.
  170. Rahman, B.M.A., Rajarajan, M., Wongcharoen, T., Katsriku, F.A., Themistos, C., Buah, P.A., Meyer, M. and Grattan, K.T.V. (1999). Rigorous characterisation of photonic devices using the finite element method. International Conference on Fiber Optics and Photonics (PHOTONICS-98) 14 Dec 1998 – 18 Dec 1998, New Delhi, India.
  171. Rajarajan, M., Rahman B.M.A, , Meyer, M, and Grattan, K.T.V, (1998). Rigorous study of the reflection coefficient from the butt-coupled spot-size expanded PIC-fibber junction. IEEE EDMO November, Manchester.
  172. Rajarajan, M., Rahman, B.M.A, and Grattan, K.T.V, (1998). Design and Analysis of Optical Polarizers Incorporating MQW Waveguides. OSA/IEEE Integrated Photonics Research March, Victoria, Canada.
  173. Rahman, B.M.A., Rajarajan, M., Wongcharoen, T. and Grattan, K.T. (1998). Spot-size transformations for laser-fiber integration. Conference on Integrated Optic Devices II 28-30 January, San Jose, California.
  174. Rajarajan, M., Rahman, B.M.A., , Wongcharoen, T., and Grattan, K.T.V., (1998). Rigorous Characterization of MMI-based photonic devices. Integrated Optic Devices II San Jose, California USA.
  175. Rajarajan, M., Rahman, B.M.A, , Wongcharoen, T, , Buah, P.A., , Mahmood, N, and Grattan, K.T.V, (1997). Rigorous Numerical Analysis of Non-Uniform Optical Guided-Wave Devices. Progress in Electromagnetic Research Symposium (PIERS) 6-9 January, Hong Kong.
  176. Rajarajan, M., Buah, P.A., Wongcharoen, T., Rahman, B.M.A., Grattan, K.T.V., Schulz, D., Glingener, C. and Kopka, P. (1996). Modelling of Multimode Interference based power dividers using different numerical approaches. Applied Optics Conference, IoP September, Reading, UK.
  177. Rahman, B.M.A., Rajarajan, M., Wongcharoen, T., Buah, P.A., Grattan, K.T.V., Perrone, G. and Montrosset, I. (1996). Computer modelling of photonic devices for optical measurements. IEE Colloquium on Modelling in Medicine 21 June.
  178. Rajarajan, M., Rahman, B.M.A., Wongcharoen, T., Buah, P.A. and Grattan, K.T.V. (1996). Accurate characterization of multimode interference-based devices. .

Journal Articles (90)

  1. Idrees, F., Rajarajan, M., Conti, M., Chen, T.M. and Rahulamathavan, Y. (2017). PIndroid: A novel Android malware detection system using ensemble learning methods. Computers and Security, 68, pp. 36–46. doi:10.1016/j.cose.2017.03.011.
  2. Arunkumar, S., Soyluoglu, B., Sensoy, M., Srivatsa, M. and Rajarajan, M. (2017). Location attestation and access control for mobile devices using GeoXACML. Journal of Network and Computer Applications, 80, pp. 181–188. doi:10.1016/j.jnca.2016.11.028.
  3. Arsalan, M., Qureshi, A.S., Khan, A. and Rajarajan, M. (2017). Protection of medical images and patient related information in healthcare: Using an intelligent and reversible watermarking technique. Applied Soft Computing Journal, 51, pp. 168–179. doi:10.1016/j.asoc.2016.11.044.
  4. Somani, G., Gaur, M.S., Sanghi, D., Conti, M., Rajarajan, M. and Buyya, R. (2017). Combating DDoS attacks in the cloud: Requirements, trends, and future directions. IEEE Cloud Computing, 4(1), pp. 22–32. doi:10.1109/MCC.2017.14.
  5. Acarali, D., Rajarajan, M., Komninos, N. and Herwono, I. (2016). Survey of approaches and features for the identification of HTTP-based botnet traffic. Journal of Network and Computer Applications, 76, pp. 1–15. doi:10.1016/j.jnca.2016.10.007.
  6. Asif, W., Lestas, M., Khaliq Qureshi, H. and Rajarajan, M. (2016). Optimization based spectral partitioning for node criticality assessment. Journal of Network and Computer Applications, 75, pp. 279–292. doi:10.1016/j.jnca.2016.09.003.
  7. Rahulamathavan, Y., Veluru, S., Han, J., Li, F., Rajarajan, M. and Lu, R. (2016). User Collusion Avoidance Scheme for Privacy-Preserving Decentralized Key-Policy Attribute-Based Encryption. IEEE Transactions on Computers, 65(9), pp. 2939–2946. doi:10.1109/TC.2015.2510646.
  8. Rahulamathavan, Y., Rajarajan, M. and Phan, R.C.W. (2016). Smart, secure and seamless access control scheme for mobile devices. 2016 IEEE International Conference on Communications, ICC 2016 pp. 1088–1093. doi:10.1109/ICC.2016.7510837.
  9. Somani, G., Gaur, M.S., Sanghi, D., Conti, M. and Rajarajan, M. (2016). DDoS victim service containment to minimize the internal collateral damages in cloud computing. Computers and Electrical Engineering . doi:10.1016/j.compeleceng.2016.12.004.
  10. Asif, W., Qureshi, H.K., Rajarajan, M. and Lestas, M. (2016). Combined Banzhaf & Diversity Index (CBDI) for critical node detection. Journal of Network and Computer Applications, 64, pp. 76–88. doi:10.1016/j.jnca.2015.11.025.
  11. Asif, W., Lestas, M., Qureshi, H.K. and Rajarajan, M. (2016). Spectral partitioning for node criticality. Proceedings - IEEE Symposium on Computers and Communications, 2016-February, pp. 877–882. doi:10.1109/ISCC.2015.7405624.
  12. Fahad, L.G. and Rajarajan, M. (2015). Integration of discriminative and generative models for activity recognition in smart homes. Applied Soft Computing Journal, 37, pp. 992–1001. doi:10.1016/j.asoc.2015.03.045.
  13. Naval, S., Laxmi, V., Rajarajan, M., Gaur, M.S. and Conti, M. (2015). Employing Program Semantics for Malware Detection. IEEE Transactions on Information Forensics and Security, 10(12), pp. 2591–2604. doi:10.1109/TIFS.2015.2469253.
  14. Arunkumar, S., Sensoy, M., Srivatsa, M. and Rajarajan, M. (2015). Reasoning with streamed uncertain information from unreliable sources. Expert Systems with Applications, 42(22), pp. 8381–8392. doi:10.1016/j.eswa.2015.04.031.
  15. Zaidi, K., Milojevic, M., Rakocevic, V., Nallanathan, A. and Rajarajan, M. (2015). Host Based Intrusion Detection for VANETs: A statistical approach to Rogue Node Detection. IEEE Transactions on Vehicular Technology, 65(8), pp. 6703–6714. doi:10.1109/TVT.2015.2480244.
  16. Li, F., Rahulamathavan, Y., Conti, M. and Rajarajan, M. (2015). Robust access control framework for mobile cloud computing network. Computer Communications, 68, pp. 61–72. doi:10.1016/j.comcom.2015.07.005.
  17. Faruki, P., Bharmal, A., Laxmi, V., Ganmoor, V., Gaur, M.S., Conti, M. and Rajarajan, M. (2015). Android security: A survey of issues, malware penetration, and defenses. IEEE Communications Surveys and Tutorials, 17(2), pp. 998–1022. doi:10.1109/COMST.2014.2386139.
  18. Köhnen, C., Überall, C., Rajarajan, M., Jäger, R. and Rakočević, V. (2015). Autonomous QoS Management and Policing in Unmanaged Local Area Networks. Journal of Computer Networks and Communications, 2015 . doi:10.1155/2015/790375.
  19. Zaidi, K. and Rajarajan, M. (2015). Vehicular internet: Security & privacy challenges and opportunities. Future Internet, 7(3), pp. 257–275. doi:10.3390/fi7030257.
  20. Rahulamathavan, Y. and Rajarajan, M. (2015). Efficient privacy-preserving facial expression classification. IEEE Transactions on Dependable and Secure Computing, PP(99) . doi:10.1109/TDSC.2015.2453963.
  21. Arunkumar, S., Srivatsa, M. and Rajarajan, M. (2015). A review paper on preserving privacy in mobile environments. Journal of Network and Computer Applications, 53, pp. 74–90. doi:10.1016/j.jnca.2015.01.008.
  22. Sajjad, A., Rajarajan, M., Zisman, A. and Dimitrakos, T. (2015). A scalable and dynamic application-level secure communication framework for inter-cloud services. Future Generation Computer Systems, 48, pp. 19–27. doi:10.1016/j.future.2015.01.018.
  23. Shittu, R., Healing, A., Ghanea-Hercock, R., Bloomfield, R. and Rajarajan, M. (2015). Intrusion alert prioritisation and attack detection using post-correlation analysis. Computers and Security, 50, pp. 1–15. doi:10.1016/j.cose.2014.12.003.
  24. Gillani Fahad, L., Khan, A. and Rajarajan, M. (2015). Activity recognition in smart homes with self verification of assignments. Neurocomputing, 149(PC), pp. 1286–1298. doi:10.1016/j.neucom.2014.08.069.
  25. Rahulamathavan, Y., Phan, R.C.W., Veluru, S., Cumanan, K. and Rajarajan, M. (2014). Privacy-Preserving Multi-Class Support Vector Machine for Outsourcing the Data Classification in Cloud. IEEE Transactions on Dependable and Secure Computing, 11(5), pp. 467–479. doi:10.1109/TDSC.2013.51.
  26. Li, F., Rahulamathavan, Y. and Rajarajan, M. (2014). LSD-ABAC: Lightweight static and dynamic attributes based access control scheme for secure data access in mobile environment. Proceedings - Conference on Local Computer Networks, LCN pp. 354–361. doi:10.1109/LCN.2014.6925791.
  27. Fiaz, M., Yousaf, R., Hanfi, M., Asif, W., Qureshi, H.K. and Rajarajan, M. (2014). Adding the reliability on tree based topology construction algorithms for wireless sensor networks. Wireless Personal Communications, 74(2), pp. 989–1004. doi:10.1007/s11277-013-1334-2.
  28. Adamsky, F., Khayam, S.A., Jäger, R. and Rajarajan, M. (2014). Stealing bandwidth from BitTorrent seeders. Computers and Security, 46, pp. 126–140. doi:10.1016/j.cose.2014.07.009.
  29. Asif, W., Qureshi, H.K., Iqbal, A. and Rajarajan, M. (2014). On the complexity of average path length for biological networks and patterns. International Journal of Biomathematics, 7(4) . doi:10.1142/S1793524514500387.
  30. Rahulamathavan, Y., Veluru, S., Phan, R.C.-.W., Chambers, J.A. and Rajarajan, M. (2014). Privacy-preserving clinical decision support system using Gaussian kernel-based classification. IEEE J Biomed Health Inform, 18(1), pp. 56–66. doi:10.1109/JBHI.2013.2274899.
  31. Ray, I., Feng, D. and Rajarajan, M. (2013). Message from the CSS 2013 program chairs. Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), 8300 LNCS .
  32. Rajarajan, M. and Furnell, S. (2013). Editorial for security and privacy in wireless networks special issue. Mobile Networks and Applications, 18(5), pp. 664–665. doi:10.1007/s11036-013-0471-x.
  33. Raoufi, N., Surre, F., Rajarajan, M., Sun, T. and Grattan FREng, K.T.V. (2013). Fibre Optic pH Sensor Using Optimized Layer-by-Layer Coating Approach. IEEE Sensors Journal, 14(1), pp. 47–54. doi:10.1109/JSEN.2013.2280283.
  34. Weerasinghe, D., Rahulamathavan, Y. and Rajarajan, M. (2013). Secure trust delegation for sharing patient medical records in a mobile environment. Health Policy and Technology, 2(1), pp. 36–44. doi:10.1016/j.hlpt.2012.12.001.
  35. Ueberall, C., Koehnen, C., Rakocevic, V., Jaeger, R., Hoy, E. and Rajarajan, M. (2013). Recommendations in a heterogeneous service environment. MULTIMEDIA TOOLS AND APPLICATIONS, 62(3), pp. 785–820. doi:10.1007/s11042-011-0874-2.
  36. Nunia, V., Kakadiya, B., Hota, C. and Rajarajan, M. (2013). Adaptive task scheduling in service oriented crowd using SLURM. Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), 7753 LNCS, pp. 373–385. doi:10.1007/978-3-642-36071-8-29.
  37. Guillemain, H., Rajarajan, M., Lin, Y.C., Chen, C.T., Sun, T. and Grattan, K.T.V. (2013). Feasibility studies using thin sol-gel films doped with a novel lead-selective fluorophore for optical fibre sensing applications. Measurement: Journal of the International Measurement Confederation, 46(8), pp. 2971–2977. doi:10.1016/j.measurement.2013.04.050.
  38. Guillemain, H., Rajarajan, M., Lin, Y.-.C., Chen, C.-.T., Sun, T. and Grattan, K.T.V. (2013). Feasibility studies using thin sol-gel films doped with a novel lead-selective fluorophore for optical fibre sensing applications. Measurement .
  39. Modi, C., Patel, D.R., Borisaniya, B., Patel, A. and Rajarajan, M. (2013). A survey on security issues and solutions at different layers of Cloud computing. The Journal of Supercomputing, 63, pp. 561–592. doi:10.1007/s11227-012-0831-5.
  40. Modi, C., Patel, D., Borisanya, B., Patel, A. and Rajarajan, M. (2012). A novel framework for intrusion detection in cloud. Proceedings of the 5th International Conference on Security of Information and Networks, SIN'12 pp. 67–74. doi:10.1145/2388576.2388585.
  41. Dar, T., Homola, J., Rahman, B.M.A. and Rajarajan, M. (2012). Label-free slot-waveguide biosensor for the detection of DNA hybridization. Appl Opt, 51(34), pp. 8195–8202.
  42. Hota, C., Gaurav, K., Prasanna, G., Narayana, M.V.S., Mohanty, H. and Rajarajan, M. (2012). Improved object lookup in unstructured peer-to-peer overlay networks. Communications in Computer and Information Science, 269 CCIS(PART I), pp. 237–244. doi:10.1007/978-3-642-29219-4_28.
  43. Raoufi, N., Surre, F., Sun, T., Rajarajan, M. and Grattan, K.T.V. (2012). Wavelength dependent pH optical sensor using the layer-by-layer technique. Sensors and Actuators, B: Chemical, 169, pp. 374–381. doi:10.1016/j.snb.2012.05.024.
  44. Pawar, P.S., Rajarajan, M., Nair, S.K. and Zisman, A. (2012). Trust model for optimized cloud services. IFIP Advances in Information and Communication Technology, 374 AICT, pp. 97–112. doi:10.1007/978-3-642-29852-3_7.
  45. Modi, C., Patel, D., Patel, H., Borisaniya, B., Patel, A. and Rajarajan, M. (2012). A survey of intrusion detection techniques in Cloud. Journal of Network and Computer Applications . doi:10.1016/j.jnca.2012.05.003.
  46. Modi, C., Patel, D., Borisaniya, B., Patel, A. and Rajarajan, M. (2012). A survey on security issues and solutions at different layers of Cloud computing. Journal of Supercomputing pp. 1–32.
  47. Rizvi, S., Qureshi, H.K., Khayam, S.A., Rakocevic, V. and Rajarajan, M. (2012). A1: An energy efficient topology control algorithm for connected area coverage in wireless sensor networks. J. Network and Computer Applications, 35, pp. 597–605. doi:10.1016/j.jnca.2011.11.003.
  48. Adamsky, F., Köhnen, C., Überall, C., Rakočević, V., Rajarajan, M. and Jäger, R. (2011). A novel concept for hybrid quality improvements in consumer networks. Digest of Technical Papers - IEEE International Conference on Consumer Electronics pp. 39–43. doi:10.1109/ICCE-Berlin.2011.6031799.
  49. Qureshi, H.K., Ahmad, J.J., Khayam, S.A., Rakocevic, V. and Rajarajan, M. (2011). Graph-theoretic complexity reduction for markovian wireless channel models. Wireless Personal Communications, 58(4), pp. 831–849. doi:10.1007/s11277-009-9908-8.
  50. Qureshi, H.K., Rizvi, S., Saleem, M., Khayam, S.A., Rakocevic, V. and Rajarajan, M. (2011). Poly: A Reliable and Energy Efficient Topology Control Protocol for Wireless Sensor Networks. Computer Communications, 34, pp. 1235–1242.
  51. Rajarajan, M., Qureshi, H.K., Rizvi, S., Saleem, M., Khayam, S. and Rakocevic, V. (2011). A Reliable and Energy Efficient Topology Control Protocol for Wireless Sensor Networks. Elsevier Computer Communications Journal .
  52. Rajarajan, M., Hota, C., Sanka, S. and Nair, S. (2011). Capability based cryptographic based data access control in cloud computing. International Journal Advanced Networking and Applications .
  53. Rajarajan, M., Saquib, Z., Batra, R., Pal, O., Nevangune, A. and patel, D. (2011). A Configurable and Efficient Key-Management scheme for SCADA Communication Networks. International Journal of Research and Reviews in Information Security and Privacy (IJRRISP) .
  54. Rajarajan, M., Ueberall, C., Rakocevic, V., Jaeger, R. and Koehnen, C. (2011). Recommendation index for DVB content using service information. ACM Journal of Multimedia Communications .
  55. Rajarajan, M., Qureshi, H.K., Rizvi, S., Saleem, M., Ali Khayam, S. and Rakocevic, V. (2011). Evaluation and Improvement of CDS based Topology Control Protocols for Wireless Sensor Networks. Under Review, ACM/Springer Journal Wireless Networks .
  56. Grattan, K.T., Themistos, C., Rajarajan, M., Rahman, B.M.A. and et al., (2009). Characterization of Silica Nanowires for Optical Sensing. JOURNAL OF LIGHTWAVE TECHNOLOGY, 27(24), pp. 5537–5542.
  57. Guillemain, H., Rajarajan, M., Sun, T., Grattan, K.T. and et al., (2009). A self-referenced reflectance sensor for the detection of lead and other heavy metal ions using optical fibres. MEASUREMENT SCIENCE & TECHNOLOGY, 20(4) .
  58. Rajarajan, M., Dar, T., Themistos, C., Rahman, B.M.A., Grattan, K.T.V., Homola, J. and Irudeyaraj, J. (2009). Modeling and characterization of surface plasmon based sensors for the detection of E coli. Journal of Modern Optics, 56(4), pp. 564–471.
  59. Rajarajan, M., Spackova, B., Piliarik, M., Kvasnicka, P., Themistos, C. and Homola, J. (2009). Novel concept of multi-channel fiber optic surface plasmon resonance sensor. Sensors and Actuators B: Chemical, 139(5), pp. 199–203.
  60. Elmufti, K., Weerasinghe, D., Rajarajan, M., Rakocevic, V., Khan, S. and MacDonald, J.A. (2009). Mobile Web services authentication using SAML and 3GPP generic bootstrapping architecture. Int. J. Inf. Sec., 8, pp. 77–87. doi:10.1007/s10207-008-0065-y.
  61. Guillemain, H., Rajarajan, M., Sun, T., Grattan, K.T. and et al., (2008). A Disposable Optical Fiber-Based Capillary Probe for Sensing Lead Ions. IEEE SENSORS JOURNAL, 8(9-10), pp. 1656–1662.
  62. Elmufti, K., Weerasinghe, D., Rajarajan, M. and Rakocevic, V. (2008). Anonymous authentication for mobile Single Sign-On to protect user privacy. IJMC, 6, pp. 760–769. doi:10.1504/IJMC.2008.019824.
  63. Weerasinghe, D., Rajarajan, M., Elmufti, K. and Rakocevic, V. (2008). Patient privacy protection using anonymous access control techniques. Methods Inf Med, 47(3), pp. 235–240.
  64. Thermistos, C., Rahman, B.M.A., Rajarajan, M., Grattan, K.T. and et al., (2007). Characterization of Silver/Polystyrene (PS)-coated hollow glass waveguides at THz frequency. JOURNAL OF LIGHTWAVE TECHNOLOGY, 25(9), pp. 2456–2462.
  65. Weerasinghe, D., Elmufti, K., Rajarajan, M. and Rakocevic, V. (2007). Securing electronic health records with novel mobile encryption schemes. Int J Electron Healthc, 3(4), pp. 395–416. doi:10.1504/IJEH.2007.015320.
  66. Themistos, C., Rahman, B.M.A., Rajarajan, M., Kalli, K. and Grattan, K.T.V. (2006). Characterization of surface-plasmon modes in metal-clad optical waveguides. Appl Opt, 45(33), pp. 8523–8530.
  67. Rahman, B.M.A., Kabir, A.K.M.S., Rajarajan, M., Grattan, K.T.V. and Rakocevic, V. (2006). Birefringence study of photonic crystal fibers by using the full-vectorial finite element method. Applied Physics B: Lasers and Optics, 84(1-2), pp. 75–82. doi:10.1007/s00340-006-2201-6.
  68. Rajarajan, M., Themistos, C., Rahman, B.M.A., Rakocevic, V. and Grattan, K.T.V. (2006). Finite element solutions of surface-plasmon modes in metal-clad dielectric waveguides at THz frequency. Journal of Lightwave Technology, 24(12), pp. 5111–5118.
  69. Themistos, C., Rahman, B.M.A., Rajarajan, M., Rakocevic, V. and Grattan, K.T.V. (2006). Finite element solutions of surface-plasmon modes in metal-clad dielectric waveguides at THz frequency. International Journal of Microwave and Optical Technology, 1(1), pp. 156–167.
  70. Rahman, B.M.A., Wongcharoen, T., Themistos, C., Abdallah, R., Kabir, A.K.M.S., Ladele, E.O., Somasiri, N., Alam, M.S., Rajarajan, M. and Grattan, K.T.V. (2005). Finite element characterisation of photonic devices for optical communications. IEE Proceedings: Circuits, Devices and Systems, 152(5), pp. 532–538. doi:10.1049/ip-cds:20045052.
  71. Rahman, B.M.A., Abdallah, R., Rajarajan, M., Obayya, S.S.A. and Grattan, K.T.V. (2005). Rigorous numerical analysis of mode beating in tapered semiconductor amplifiers. Journal of Lightwave Technology, 23(6), pp. 2124–2130. doi:10.1109/JLT.2005.849942.
  72. Rahman, B.A., Kabir AKMS, , Rajarajan M, and et al., (2005). Finite element modal solutions of planar photonic crystal fibers with rectangular air-holes. OPTICAL AND QUANTUM ELECTRONICS, 37(1-3), pp. 171–183.
  73. Rahman, B.M.A., Kabir, A.K.M.S., Rajarajan, M. and Grattan, K.T.V. (2005). Finite element modal solutions of planar photonic crystal fibers with rectangular air-holes. Optical and Quantum Electronics, 37(1-3), pp. 171–183. doi:10.1007/s11082-005-1134-3.
  74. Themistos, C., Rajarajan, M., Rahman, B.M.A., Obayya, S.S.A. and Grattan, K.T.V. (2004). Rigorous comparison of parabolically tapered and conventional multimode-interference-based 3-dB power splitters in InGaAsP/InP waveguides. Appl Opt, 43(27), pp. 5228–5235.
  75. Rahman, B.A., Themistos, C., Rajarajan, M., Grattan, K.T.V. and Obayya, S.S.A. (2004). A rigorous comparison of the tapered and conventional MMI-based 3dB power splitters. Applied Optics, 43, pp. 5228–5235.
  76. Rajarajan, M., Rahman, B.M.A., Wongcharoen, T., Themistos, C., Somasiri, N., Haxha, S. and Grattan, K.T.V. (2003). Review of finite-element characterization of photonic devices. Journal of Modern Optics, 50(12), pp. 1835–1848. doi:10.1080/0950034031000069352.
  77. Rajarajan, M., Rahman, B.M.A. and Grattan, K.T.V. (2003). A Novel compact optical polarizer incorporating MQW waveguides. IEEE J. Lightwave Technol, 21(12), pp. 3463–3470.
  78. Rahman, B.A., Wongcharoen, T., Rajarajan, M. and Grattan, K.T.V. (2001). Spot-size convertion using uniform waveguide sections for efficient laser-fiber coupling, J Lightwave Technology. J Lightwave Technology, 19, pp. 708–716.
  79. Wongcharoen, T., Rahman, B.M.A., Rajarajan, M. and Grattan, K.T.V. (2001). Spot-size conversion using uniform waveguide sections for efficient laser-fiber coupling. Journal of Lightwave Technology, 19(5), pp. 708–716. doi:10.1109/50.923484.
  80. Rahman, B.M.A., Obayya, S.S.A., Somasiri, N., Rajarajan, M., Grattan, K.T.V. and El-Mikathi, H.A. (2001). Design and characterization of compact single-section passive polarization rotator. Journal of Lightwave Technology, 19(4), pp. 512–519. doi:10.1109/50.920849.
  81. Rajarajan, M., Obayya, S.S.A., Rahman, B.M.A., Grattan, K.T.V. and El-Mikati, H.A. (2000). Characterisation of low-loss waveguide bends with offset-optimisation for compact photonic integrated circuits. IEE PROCEEDINGS-OPTOELECTRONICS, 147(6), pp. 382–388. doi:10.1049/ip-opt:20000814.
  82. Rajarajan, M., Rahman, B.M.A. and Grattan, K.T.V. (1999). A Rigorous Comparison of the Performance of Directional Couplers with Multimode Interference Devices. Journal of Lightwave Technology, 17(2), pp. 243–248. doi:10.1109/50.744233.
  83. Rahman, B.M.A., Rajarajan, M., Wongcharoen, T., Katsriku, F., Themistos, C., Buah, P.A., Meyer, M. and Grattan, K.T.V. (1999). Rigorous characterization of photonic devices using the finite element method. Proceedings of SPIE - The International Society for Optical Engineering, 3666, pp. 160–169.
  84. Rajarajan, M., Rahman, B.M.A. and Grattan, K.T.V. (1998). Accurate numerical analysis of multimode-interference-based 3-dB couplers. Applied Optics, 37(24), pp. 5672–5678. doi:10.1364/AO.37.005672.
  85. Rajarajan, M., Rahman, B.M.A. and Grattan, K.T.V. (1998). Numerical study of spot-size expanders for an efficient OEIC to SMF coupling. IEEE Photonics Technology Letters, 10(8), pp. 1082–1084. doi:10.1109/68.701509.
  86. Rajarajan, M., Rahman, B.M.A, and Grattan, K.T.V, (1998). Spot-Size Expansionfor Improved OEIC-to-Fiber Coupling Using Directional Couplers with 2-D Confinement. IEE Proceedings Optoelectronics, 145, pp. 71–76.
  87. Rajarajan, M., Themistos, C., Azizur Rahman, B.M. and Grattan, K.T.V. (1997). Characterization of metal-clad TE/TM mode splitters using the finite element method. Journal of Lightwave Technology, 15(12), pp. 2264–2269. doi:10.1109/50.643553.
  88. Rajarajan, M., Rahman, B.M.A., Wongcharoen, T. and Grattan, K.T.V. (1996). Accurate analysis of MMI devices with two-dimensional confinement. Journal of Lightwave Technology, 14(9), pp. 2078–2084. doi:10.1109/50.536976.
  89. Rahman, B.M.A., Rajarajan, M., Wongcharoen, T. and Grattan, K.T.V. (1996). Accurate analysis of multimode interference devices. IEEE Photonics Technology Letters, 8(6), pp. 809–811. doi:10.1109/68.502102.
  90. Rahman, B.M.A., Rajarajan, M., Wongcharoen, T. and Grattan, K.T.V. (1996). Improved laser-fiber coupling by using spot-size transformer. IEEE Photonics Technology Letters, 8(4), pp. 557–559. doi:10.1109/68.491225.

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City, University of London is an independent member institution of the University of London. Established by Royal Charter in 1836, the University of London consists of 18 independent member institutions with outstanding global reputations and several prestigious central academic bodies and activities.