Just got back from vegas and finally started catching up. Looks like a fake ATM was placed at defcon (no surprise).
"As the conference was kicking off a few days ago, attendees noticed that at ATM placed in the Riviera Hotel, which plays host to the annual event, didn't quite look right, according to a senior conference organizer who identified himself only as Priest. "They looked at the screen where there would normally be a camera," he said. "It was a little bit too dark, so someone shined a flashlight in there and there was a PC."
The ATM looked like a working system, but when people would put their cards in the machine, it would scan their card information and record the PIN numbers they entered. He didn't know how long the ATM had been at the Riviera." - ComputerWorld
I make it a point to use the nicer hotel (bellagio, caesars, etc...) ATMs where I can see 10 camera's aimed at me and whenever possible withdraw my money in advance of my blackhat/defcon trip.