Hackers Access a Million ID Numbers for Apple Devices/Apple Prevents Marketers from Tracking App Use

The New York Times blog Bits reports that "hackers released a file that they said contained a million identification numbers for Apple mobile devices, claiming that they had obtained it by hacking into the computer of an F.B.I. agent. The F.B.I. said it had no evidence that this was true....Apple’s unique device identifiers — known as U.D.I.D.’s — are 40-character strings of letters and numbers assigned to Apple devices...Apple stopped letting app developers take advantage of device identifiers last year, to make it harder for marketers to track its customers as they moved from app to app." Read more.