Another T-Mobile cyberattack reportedly exposed customer info and SIMs

Illustration by Alex Castro / The Verge

T-Mobile has suffered another cyberattack after being rocked by a massive data breach in August. This time around, attackers accessed “a small number of” customers’ accounts, according to documents posted by The T-Mo Report.

According to the report, customers either fell victim to a SIM swapping attack (which could allow someone to bypass SMS-powered two-factor authentication), had personal plan information exposed, or both. The document shows that the customer proprietary network information that was viewed could’ve included customers’ billing account name, phone and account number, and info about their plan, including how many lines were attached to their account.

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Author: Mitchell Clark