Panic, cold and sharp, spiked in his chest. He wasn't controlling the phone anymore. The phone was controlling him. Or rather, the payload he had unleashed had a hidden subroutine. The "upd" in the filename— update —hadn't been for the victim's phone. It was an update to the C2 (Command and Control) server itself. It was a trap, a weaponized backdoor left by the original developers to hijack the hijackers.
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