In 2014, the media reported a protocol vulnerability of SS7 by which anybody can track the movements of cell phone users from virtually anywhere in the world with a success rate of approximately 70%. In addition, eavesdropping is possible by using the protocol to forward calls and also facilitate decryption by requesting that each caller's carrier release a temporary encryption key to unlock the communication after it has been recorded. The software tool "SnoopSnitch" can warn when certain SS7 attacks occur against a phone, and detect IMSI-catchers that allow call interception and other activities.