Hackers leverage a security flaw in SS7 (Signalling System Seven) protocol that allows hackers to track phone locations, listen in on calls and text messages.
Hackers Spied on US Congressman’s Smartphone
“Last year, the President of the United States called me on my phone, and we discussed some issues,” he added. “So if hackers were listening in, they’d know that phone conversation, and that is immensely troubling.”
How Can You Avoid this Hack?
“The people who knew about this flaw [or flaws] should be fired,” Lieu said on the show. “You can’t have 300-some Million Americans—and really, right, the global citizenry — be at risk of having their phone conversations intercepted with a known flaw, simply because some intelligence agencies might get some data.”