DefCon security on Friday warned attendees at the annual hacker conference that Dateline NBC may have sent a mole with a hidden camera to the event to capture hackers admitting to crimes. DefCon says it was tipped off by their own mole at Dateline who sent them a pic of the undercover journalist who DefCon employees identified as producer Michelle Madigan.

Check the photos... it is her...

'To catch a journalist' @ DefCon NBC Style