http://bit.ly/2rttol2 A technology that Cell networks use to to enable SMS is SS7, known as CCSS7 in the U.S. and C7 in the U.K.. It is a telecommunications standard that enables a digital signaling network to provide cellular and wired call setup, routing, and control. Any dedicated hacker can gain access to SS7, spoof the target’s phone number, and receive all texts and voice communication between the target and anyone else. This includes capturing one time passwords (OTPs) sent to phones used in two-factor authentication. In 2016, Karsten Nohl of German Security Research Labs demonstrated an SS7 attack on U.S. Congressman Ted Lieu’s phone number. Also in 2016, Positive Technologies demonstrated how they could bypass use of SMS for authentication on WhatsApp, Telegram, and Facebook. These are not attacks against the phones. The phones were not hacked. These are attacks on SS7 using the target’s spoofed phone number.
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