Even the ATM machines were suspect at this year’s Defcon conference, where hackers play intrusion games at the bleeding edge of computer security.
Anyone naive enough to access the Internet through the hotel’s unsecured wireless system could see their name and part of their passwords scrolling across a huge public screen. It was dubbed the “The Wall of Sheep.” Among the exposed sheep were an engineer from Cisco Systems Inc., multiple employees from Apple Computer Inc. and a Harvard professor.