If the problem is not simply malfunctioning machines, it would be at least the second incident of something funny going on with ATMs around Defcon.
Earlier in the week, conference attendees at the Riviera Hotel noticed what was on inspection a bogus ATM machine positioned in the lobby. They shined a light into its screen, which revealed a PC behind it. Law enforcement later confiscated it.
Ironically, one of the talks planned for this year's Black Hat and Defcon conferences dealing with ATMs was cancelled. A researcher with Juniper Networks, Barnaby Jack, was supposed to detail a vulnerability affecting a popular line of new ATMs. But Juniper barred Barnaby from giving his presentation after the unnamed ATM vendor threatened legal action.
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