The group AntiSec is claiming that they have released over 1 million Apple Unique Device Identifiers (UDIDs) from which they obtain by breaching the FBI. They claim to have over 12 million IDs in hand which includes things such as the user names, device names, cell phone number, notification tokens and addresses. The hackers issued a statement on the data that was taken:
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 using the AtomicReferenceArray vulnerability on Java, during the shell session some files were downloaded from his Desktop folder one of them with the name of ?NCFTA_iOS_devices_intel.csv? turned to be a list of 12,367,232 Apple iOS devices including Unique Device Identifiers (UDID), user names, name of device, type of device, Apple Push Notification Service tokens, zipcodes, cellphone numbers, addresses, etc. the personal details fields referring to people appears many times empty leaving the whole list incompleted on many parts. no other file on the same folder makes mention about this list or its purpose.
They did this most likely to show that the FBI is using these devices to track citizens. Also if the information from the hackers is correct then the NCFTA acronym would likely be in reference to the National Cyber-Forensics & Training Alliance, which is a non-profit corporation with experts coming from both the public and private sector to investigate cybercrimes. Do you have a UDID? Are you concerned that you could be one of the twelve million? Click this link to find out if you have: UDID Check.