Fooling with hackers is generally a very bad idea, but the scammers responsible for an apparent ATM grift in Las Vegas may not have been aware of that particular rule of thumb. The ATM scam happened during the Black Hat and Defcon security conferences last week, during which time the Las Vegas Strip was heavily populated with hackers well-versed in the many methods cyberthieves employ to rip off victims. The hackers who noticed the suspicious-looking ATMs called in the authorities, and both the Las Vegas Police Department and the Secret Service are now reportedly involved.