Archive for September, 2007

Speaking at CSI 2007

September 26, 2007

I’ve been invited to speak at the Computer Security Institutes’s Annual Conference (CSI 2007) this November in Washington D.C., on the subject of VoIP Attacks. This presentation was originally intended to be a “state of the industry” type talk given every year or so, and the last time I gave it was at EUSecWest last March so it’s about time to update it and present it again.


Speaking at ToorCon 9

September 24, 2007

I’ve been invited to speak at ToorCon 9 in San Diego next month. My topic will be Context-keyed Payload Encoding in which I introduce a new method of keying an encoder which is based entirely on contextual information that is predictable or known about the target by the attacker and constructible or recoverable by the decoder stub when executed at the target. An active observer of the attack traffic, however, should be unable to decode the payload due to lack of the contextual keying information.

Real-time Steganography with RTP Video

September 21, 2007

Apparently, some guy purchased video of all of the DEFCON 15 talks on DVD, then ripped them all to MP4 and uploaded them to Google Video. If you couldn’t make DEFCON this year and wanted to see my talk, or don’t have the patience to read the 50 page paper but have about an hour to watch a video, you should check it out.

Real-time Steganography with RTP Whitepaper

September 18, 2007

My paper detailing the research I presented last month at DEFCON 15 was published today in Uninformed Journal Vol. 8. The paper is entitled “Real-time Steganography with RTP” and details using steganographic techniques to establish a covert channel within the protocol commonly used for the media channel in VoIP calls as well as a reference implementation.