Phonecalls over the 4G network are still susceptible to eavesdropping even though they are encrypted. Researchers from the Horst Görtz Institute for IT Security (HGI) at the Ruhr University of Bochum, Germany, have succeeded in decrypting the content of each phone call when they were on the same radio cell as the victim. They made use of an error in the base stations. The manufacturers have now closed the security leak.
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