T-Mobile discloses breach that exposed customer personal information

T-Mobile’s headquarters in Bellevue. (GeekWire File Photo)

T-Mobile discovered and shut down a breach that the company says could have exposed some customers’ personal information.

The Bellevue, Wash. company said its cybersecurity team discovered an “unauthorized access” on Aug. 20 and reported it to law enforcement. T-Mobile has begun sending notifications out to customers affected by the breach “out of an abundance of caution.”

T-Mobile said the breach did not affect any financial data, social security numbers or passwords. However, some customers’ personal information — including name, billing zip code, phone number, email address, account number and account type — may have been exposed.

T-Mobile encouraged customers worried about the breach to reach out to customer service. T-Mobile is overhauling its customer service model and said its customers can reach the company in a variety of ways including calling 611 to talk to someone or schedule a discussion at a later time and two-way messaging through MyT-Mobile.com, the T-Mobile App, or iMessage on Apple Business Chat.

“We take the security of your information very seriously and have a number of safeguards in place to protect your personal information from unauthorized access,” the company wrote. “We truly regret that this incident occurred and are so sorry for any inconvenience this has caused you.”