Casey Chin A spate of hacked Instagram accounts. A $220 million lawsuit against AT&T. A bustling underground crime ring . They all have roots in an old problem that has lately found new urgency: SIM card swaps , a scam in which hackers steal your mobile identity—and use it to upend your life . At its most basic level, a SIM swap is when someone convinces your carrier to switch your phone number over to a SIM card they own. They’re not doing it for prank call cover, or to rack up long-distance charges. By diverting your incoming messages, […]