An anonymous reader writes "Dateline NBC allegedly attempted to infiltrate the DefCon hackerfest with a producer using a hidden camera. The show hoped to tape hackers admitting to illegal activities, but DefCon got wind of the plot and displayed the would-be-mole's photo before every presentation. Dateline refused to deny the planned infiltration. 'All journalists covering DefCon sign an agreement upon registering for the conference that outlines the rules, but the DefCon organizers say the mole apparently registered as a regular attendee, thereby bypassing the legal agreement. Dateline NBC is best known for its controversial To Catch A Predator series, which uses hidden cameras to tape men who are allegedly seeking to have sex with minors they met online.'"