• International Wired/Wireless Internet Communications WWIC’05
• International Workshop on Broadband Wireless Services and Applications (BroadWISE'04)
• International Conference on Information and Communications Security ICICS’04
• International Wired/Wireless Internet Communications WWIC’04
• IEEE Vehicular Technology Conference (Fall-2003)
• IASTED/IEEE Wireless and Optical Communications Conference (2003)

Publicity Co-Chair for ACM WiSe (WIreless SEcurity) in conjunction with ACM MobiCom for 2002 and 2003.

Member of the IASTED Technical Committee on Telecom for the period 2002-2005.

Member of the IEEE ICCCAS sub-committee on Wireless Personal Communications.

Participated to several NSF panels.

Senior Member of IEEE, member of ACM.

Reviewed papers for IEEE Transactions on Mobile Computing, Telecommunications Systems Journal, Journal of Supercomputing, IEEE Infocom, IEEE International Symposium on Computers and Communications, IEEE International Symposium on Information Theory, ACM Principles Of Distributed Computing, The Computer Journal, IEEE Transaction on Parallel and Distributed Systems, IEEE Transactions on Software Engineering .