Simjacker: SIM Card Attack Used to Spy on Mobile Phone Users
Researchers at AdaptiveMobile Security, a firm that specializes in cyber telecoms security, have disclosed a new SIM card attack method that could work against over 1 billion mobile phones, and they claim it has already been exploited by a surveillance company to track users.
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Story added 12. September 2019, content source with full text you can find at link above.