holden writes: "Ian Goldberg, leading security researcher, professor at the university of waterloo, cypherpunk and co-creator of the Off-the-Record Messaging (OTR) protocol recently gave a talk on protecting your IM conversations. He discusses OTR and its importance in today's world with warrant-less wire tapping and all that bad stuff. With OTR users benefit from being able to have truly private conversations over IM, by using encryption to obtain authentication, deniability, and perfect forward secrecy, while working within their existing IM infrastructure. With the recent NSA wiretapping activities and increasing Big Brother presence, security and OTR are increasingly important. An avi of the talk is available by http as well as by bittorrent and a bunch of other formats."