More than 12 million Apple Unique Device Identifiers (UDIDs) allegedly obtained by hacking group AntiSec may have been stolen from an app publisher’s computer. AntiSec claimed that the UDIDs were acquired from a compromised FBI laptop, but Instapaper creator Marco Arment blogged that the information may instead have been taken from a database at Spankapps, built by push notifications issued by the publisher’s novelty apps. Both Apple and…