Apple's annual developer conference in San Francisco.
U.S. Federal Law Enforcement Says It's Impossible to Wiretap iMessage Conversations
The memo appears to be aimed at informing DEA agents that while they may have the appropriate subpoena to get SMS messages, they may not be getting all messages sent and received if the target is using iMessage.
Security researchers suggest that it may be possible for Apple to comply with government search warrants and subpoenas to hand over iMessage data, but the DEA note says it is currently "impossible to intercept iMessages between two Apple devices".
The DEA's "Intelligence Note" says that iMessage came to the attention of the agency's San Jose, Calif., office as agents were drafting a request for a court order to perform real-time electronic surveillance under Title III of the Federal Wiretap Act. They discovered that records of text messages already obtained from Verizon Wireless were incomplete because the target of the investigation used iMessage: "It became apparent that not all text messages were being captured."This issue is nothing new, however -- law enforcement and spy agencies have struggled getting wiretaps on VoIP calls for years, with Skype's P2P calls being particularly difficult to tap.
This echoes what other law enforcement agencies have been telling politicians on Capitol Hill for years. Last May, CNET reported that the FBI has quietly asked Web companies not to oppose a law that would levy new wiretap requirements on social-networking Web sites and providers of VoIP, instant messaging, and Web e-mail. During an appearance two weeks later at a Senate hearing, the FBI's Mueller confirmed that the bureau is pushing for "some form of legislation."