Gina Fisk Mike Fisk Christos Papadopoulos Joshua Neil Eliminating Steganography in Internet Traffic with Active Wardens. 18-35 2002 conf/ih/2002 Information Hiding http://link.springer.de/link/service/series/0558/bibs/2578/25780018.htm db/conf/ih/ih2002.html#FiskFPN02