The hacking group Anti-sec claims it has found more than twelve-million Apple Unique Device Identifiers on an FBI agent's computer.
The group on Tuesday posted one million of the UDID's on a message board with details as to how they obtained them.
"During the second week of March 2012, a Dell Vostro notebook, used by Supervisor Special Agent Christopher K. Stangl from FBI Regional Cyber Action Team and New York FBI Office Evidence Response Team was breached," claims the group.
The group said they found a file called "NCFTA_iOS_devices_intel.csv" which contained a list of 12,367,232 Apple iOS devices. The .csv file contained Unique Device Identifiers, user names, names of devices, types of devices zip codes, cell phone numbers and address, according to the group.
Some tech websites claimed that President Barack Obama's iPad 2 information was among that obtained by AntiSec.
Mashable.com reported that UDID's are sequences of 40 numbers and letters that are specific to an Apple device. The website said that the codes aren't very revealing and that some of the info obtained by Anti-sec can be obtained by most iOS developers.
Mashable also reported that Apple users' real names, cell phone numbers and addresses were not leaked by the group.
Anti-sec said of the leaked data, "We have learnt it seems quite clear nobody pays attention if you just come out and say, ‘Hey, (the) FBI is using your device details and info.'" And that, "(The) FBI will, as usual, deny or ignore this uncomfortable thingie and everybody will forget the whole thing at amazing speed."
To see if your device's UDID has been leaked, click here.