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Simjacker
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<p>Simjacker is a <a href="/facts/Mobile_phone/H3EcqD9h">cellular</a> <a href="/facts/Software_exploit/EdlqsRJM">software exploit</a> for <a href="/facts/SIM_card/NUeSqoG1">SIM cards</a> discovered by AdaptiveMobile Security. 29 countries are vulnerable according to <a href="/facts/ZDNet/N69bLRQz">ZDNet</a>. The vulnerability has been exploited primarily in Mexico, but also Colombia and Peru, according to the <i><a href="/facts/The_Wall_Street_Journal/9Pkf2cYK">Wall Street Journal</a></i>, where it was used to track the location of mobile phone users without their knowledge. </p>