I am a PC member of

IFIPTM 2009 - Joint iTrust and PST Conferences on Privacy, Trust Management and Security

Create-Net/ICST CollaborateCom '08

23rd ACM Symposium on Applied Computing 2008

8th Annual IEEE SMC Information Assurance Workshop 2007
6th International Workshop on Privacy Aspects of Data Mining

Workshop on Web 2.0 Trust '08.

I am a reviewer of

IEEE Transactions on Knowledge and Data Engineering, USENIX Technical Conference '08, IEEE Transactions on Dependable and Secure Computing (TDSC), Journal of Systems and Software, IEEE Symposium on Security and Privacy '07, ICDE '07, Journal of Computer Security, International Workshop on Practice and Theory in Public Key Cryptography (PKC '05), IEEE Journal on Selected Areas in Communications, IEEE Transactions on Vehicular Technology