The FBI is aware of published reports alleging that an FBI laptop was compromised and private data regarding Apple UDIDs was exposed. At this time, there is no evidence indicating that an FBI laptop was compromised or that the FBI either sought or obtained this data.
“The FBI has not requested this information from Apple, nor have we provided it to the FBI or any organization. Additionally, with iOS 6 we introduced a new set of APIs meant to replace the use of the UDID and will soon be banning the use of UDID,” Apple spokesperson Natalie Kerris told AllThingsD.
People keep asking me what someone could do or find out about you with your iOS device’s UDID. I keep saying, “Not much, if anything.”
But if you’ve ever used OpenFeint — that green promo screen that appears the first time you launch many games promising high-score tracking, etc. — that may not be true, depending on what other information or social connections you’ve given them.