![]() They’re designed so that this key can be used (like when you receive a text or call someone) but so the key itself can’t be extracted.īut it’s still possible to extract the key from the SIM card, by cracking it. SIM cards contain a secret encryption key that is used to encrypt data between the phone and cellphone towers. The feds would then copy their target’s SIM card data onto a blank SIM card (this presents some challenges, as I explain below), and then put the original SIM card back without their target knowing. ![]() ![]()
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