T-Mobile believes approximately 200,000 customers were impacted by the breach.
What you need to know
T-Mobile says it suffered a security breach in early December.
Information affected by the breach included phone numbers, number of lines subscribed to, and call-related information.
The breach apparently affected only about 0.2% of all T-Mobile customers.
T-Mobile has announced that it suffered a security breach in early December, which may have exposed account information of some of its customers. As per the notice on the carrier’s website, the breach affected 0.2% – or roughly 200,000 customers (via BleepingComputer).
Our Cybersecurity team recently discovered and shut down malicious, unauthorized access to some information related to your T-Mobile account. We immediately started an investigation, with assistance from leading cybersecurity forensics experts, to determine what happened and what information was involved. We also immediately reported this matter to federal l…