The RSA conference, which has typically been one of the hottest security conferences held each year, has been embroiled in controversy since the Snowden revelation that RSA was working with the NSA to compromise some encryption functionality.  Some speakers chose to cancel their presentations and others decided to attend and protest as their response to these accusations.  Stephen Colbert addressed his reasons for choosing to show up and address the crowd.  If you are interested in his rather amusing, if a bit controversial, comments, see the link below.