This cell phone security breach lets spies access calls just by knowing your phone number

A cell phone.
(Image credit: bigtunaonline/iStock)

As your cell phone moves, it connects to different towers and networks, and cell carriers use a communications system called Signaling System 7 (SS7) to provide uninterrupted service during those transitions. SS7 dates to the 1970s, and it is not very secure. Given the right know-how, anyone with access to your cell phone number can potentially use SS7 to track the location of your phone and even intercept calls, texts, and data use.

"Researchers say that SS7 tracking systems around the world now create millions of 'malicious queries' — meaning messages seeking unauthorized access to user information — each month," The Washington Post explains in a Wednesday report on a newly obtained letter from Sen. Ron Wyden (D-Ore.) to the Department of Homeland Security urging the agency to address the issue. Wyden has also contacted the Federal Communications Commission (FCC) with a related request.

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Bonnie Kristian

Bonnie Kristian was a deputy editor and acting editor-in-chief of TheWeek.com. She is a columnist at Christianity Today and author of Untrustworthy: The Knowledge Crisis Breaking Our Brains, Polluting Our Politics, and Corrupting Christian Community (forthcoming 2022) and A Flexible Faith: Rethinking What It Means to Follow Jesus Today (2018). Her writing has also appeared at Time Magazine, CNN, USA Today, Newsweek, the Los Angeles Times, and The American Conservative, among other outlets.