Hacker group Anonymous claims that it recently obtained and released several Apple IDs, the unique string of numbers to identify iOS devices, which it allegedly found stored on an FBI laptop. 

The data was allegedly taken from FBI agent Christopher Stangl in March. Businessweek aso reported that a Java vulnerability enabled Anonymous to steal the IDs. The information remains unconfirmed and Ed Sullivan, Security Advisor at F-Secure, thinks Anonymous is making up claims that the data came from the FBI, added Businesweek.  The FBI released a statement claiming that it found "no evidence" that "any FBI laptop was compromised or that the FBI either sought or obtained this data," CNN reported.

Assuming that the data did not come from the FBI, Sullivan said it could have come from Apple or developers. Apple did not comment on the issue.

Anonymous said it also holds usernames, mobile phone numbers, and addresses, but the codes seem to have been released without identifying information attached. Since Anonymous appears to lack the identifying information it claims to have, it remains unclear how Anonymous could abuse the string of numbers even if it had access to a person's PC or laptop.

"Additional investigation into this reported breach is needed to get to the bottom of the claims made by this hacker group. Still, it would be a mistake to allow this recent incident to pass without reexamining and recommitting ourselves to dealing with this vital personal privacy and protection issue," Representative Ed Markey said in a statement Tuesday.