Back in May I gave a talk on the subject “Dual_EC_DRBG; or, the story of a not so random backdoor” for the OWASP chapter in Athens, Greece.
As the title suggests, the talk was on the Dual_EC_DRBG random number generator, which we are now all but certain was backdoored by the NSA. I wrote a blog about this last year.
The slides, in case you’re interested, can be found here (PDF). No recording of the presentation was made.
If you do like to watch a recording on Dual_EC_DRBG, I can recommend this presentation “Practical Kleptography” by Matthew Green.