Patent ID: 8893246

Claim:
A method of detecting the intervention of a rogue point of access in a communication between a wireless device and a wired network reachable via a genuine point of access, said method comprising: generating, by said wired network, an encrypted authentication message comprising data indicative of an identifier of said wireless device, wherein said identifier was presented to said wired network by said wireless device through said communication, and sending the encrypted authentication message to the wireless device; providing to a comparator, by said wireless device, over a previously authenticated wireless network, data indicative of the identifier of the wireless device and the encrypted authentication message; decrypting, by said comparator, the authentication message, and comparing the two sets of data indicative of the identifier of the wireless device; detecting intervention of a rogue point of access in a communication between said wireless device and the wired network if said two sets of data do not match; and signaling the result of said comparison to said wireless device over said previously authenticated wireless network; wherein the wired network is configured to further include in the encrypted authentication message data indicative of an identifier of the point of access used in the communication between the wireless device and the wired network and wherein the comparator is further configured to compare the data indicative of an identifier of the point of access to identifiers of known points of access previously stored at the comparator.