Editorships

1. Associate Editor. IEEE Signal Processing. Jan 06 - present.
2. Associate Editor. IEEE Security and Privacy. Jan 06 - present.
3. Associate Editor. IEEE Transactions on Information Forensics and Security. Jan 2005 - Current.
4. Associate Editor - LNCS Transactions on Multimedia Security, Sept 05 - current.
5. Associate Editor, International Journal of Security and Networks. July 05 - Current.
6. Editorial Board, The Advances in Cryptology & Information Security (ACIS) series. IOS Press. July 05 - Current.
7. Associate Editor, Journal of Electronic Imaging. Jan 2003 - Dec 05.
8. Associate Editor. ACM Multimedia Systems Journal. September 2001 - 2004.
9. Associate Editor. IEEE Transaction on Image Processing. March 1999 - 2002.
10. Guest Editor. Special Issue on Multimedia Security and Rights Management. EURASIP Journal on Applied Signal Processing. Expected Publication March 2004.
11. Guest Editor. Special Issue on Security of Data Hiding Technologies. Signal Processing Journal. Expected Publication August 2003.
12. Guest Editor. Special Issue on Multimedia Security ACM Multimedia Systems Journal, June 2003.
13. Guest Editor. Special Issue on Signal Processing for Data Hiding in Digital Media & Secure Content Delivery. IEEE Transactions on Signal Processing. April 2003.
14. Project Co-editor - JPEG-LS Extensions, Lossless Compression Standards Project, JPEG/JBIG, International Standards Organization, November 1997 - 1999.