T-Mobile says intruder breached network, stole data of 37 mn customers

T-Mobile said Thursday in a filing with the Security and Exchange Commission that the breach was discovered January 5

Cybersecurity, cyberattack
AP Boston
2 min read Last Updated : Jan 20 2023 | 9:22 AM IST

The US wireless carrier T-Mobile said that an unidentified malicious intruder breached its network in late November and stole data on 37 million customers, including addresses, phone numbers and dates of birth.

T-Mobile said Thursday in a filing with the Security and Exchange Commission that the breach was discovered January 5. It said the data exposed to theft based on its investigation to date did not include passwords or PINs, bank account or credit card information, Social Security numbers or other government IDs.

"Our investigation is still ongoing, but the malicious activity appears to be fully contained at this time," T-Mobile said, with no evidence the intruder was able to breach the company's network. The company did not immediately respond to an e-mail seeking comment.

T-Mobile said it has notified law enforcement and federal agencies, which it did not name. The company said it did not expect the incident to have material impact on its operations. It said the data was first accessed on or around November 25.

T-Mobile has been hacked before. In July, it agreed to pay USD 350 million to customers who filed a class action lawsuit after the company disclosed in August 2021 that personal data including Social Security numbers and driver's license information had been stolen. Nearly 80 million US residents were affected.

It also said at the time that it would spend USD 150 million through 2023 to fortify its data security and other technologies.

Prior to the August 2021 intrusion, the company disclosed breaches in January 2021, November 2019 and August 2018 in which customer information was accessed.

T-Mobile, based in Bellevue, Washington, became one of the country's largest cellphone service carriers in 2020 after buying rival Sprint in 2020. It reported having more than 102 million customers after the merger.

(Only the headline and picture of this report may have been reworked by the Business Standard staff; the rest of the content is auto-generated from a syndicated feed.)

Subscribe to Business Standard digital and get complimentary access to The New York Times

Quarterly Starter

₹900

3 Months

₹300/Month

SAVE 25%

Smart Essential

₹2,700

1 Year

₹225/Month

Save 46%

Super Saver

₹3,900

2 Years

₹162/Month

Subscribe

Renews automatically, cancel anytime

Here’s what’s included in our digital subscription plans

Access to Exclusive Premium Stories Online

  • Over 30 behind the paywall stories daily, handpicked by our editors for subscribers

Complimentary Access to The New York Times

  • News, Games, Cooking, Audio, Wirecutter & The Athletic

Business Standard Epaper

  • Digital replica of our daily newspaper — with options to read, save, and share

Curated Newsletters

  • Insights on markets, finance, politics, tech, and more delivered to your inbox

Market Analysis & Investment Insights

  • In-depth market analysis & insights with access to The Smart Investor

Archives

  • Repository of articles and publications dating back to 1997

Ad-free Reading

  • Uninterrupted reading experience with no advertisements

Seamless Access Across All Devices

  • Access Business Standard across devices — mobile, tablet, or PC, via web or app

More From This Section

Topics :T-MobileData breachData Theft

First Published: Jan 20 2023 | 9:22 AM IST

Next Story