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Lock Down Your AT&T Account to Prevent SIM Swapping Attacks - Here's How

  • On July 3, 2025, AT&T made its Wireless Account Lock option broadly available through the myAT&T app for both postpaid consumer and business wireless customers.
  • The launch follows rising concerns about SIM swapping scams, where attackers fraudulently transfer a phone number to a new SIM to intercept calls and texts.
  • The feature requires users to toggle it on or off in the app and blocks critical changes like device upgrades, SIM swaps, number transfers, billing changes, and adding lines until deactivated with physical phone access.
  • AT&T explained that the feature adds an additional layer of verification prior to making significant modifications to accounts, complementing biometric security measures and sending alerts to users when account changes occur to help prevent unauthorized access.
  • This security layer aims to reduce account takeovers, complementing similar protections offered by T-Mobile, Verizon, and Google Fi, and helping customers guard against identity theft and fraud.
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MacRumors broke the news in United States on Tuesday, July 1, 2025.
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