T-Mobile Data Breach Affects 37 Million CustomersThe company has experienced eight reported data breaches since 2018.

ByMadeline Garfinkle

NurPhoto | Getty Images

T-Mobileannounced on Thursday that its network experienced adata breachaffecting approximately 37 million current postpaid and prepaid customer accounts.

According to theSEC filing, the breach occurred on November 25, 2022, but was not identified until January 5, 2023.

"Our investigation is still ongoing, but the malicious activity appears to be fully contained at this time, and there is currently no evidence that the bad actor was able to breach or compromise our systems or our network," the company said.

Thestolen dataincludes names, addresses, emails, phone numbers, date of birth,T-Mobileaccount numbers, and the number of lines on the account and plan features. However, the company wrote that many of the affected accounts did not contain the full data set.

Related:T-Mobile Says Data on Over 48 Million People Stolen by Hackers

"We have notified certain federal agencies about the incident, and we are concurrently working with law enforcement," T-Mobile stated. "Additionally, we have begun notifying customers whose information may have been obtained by the bad actor in accordance with applicable state and federal requirements."

T-Mobilehas experienced eight reporteddata breachessince 2018. The most recent incident was in April 2022, when hacking group Lapsus$ gained access to the company's employee's accounts, allowing them to reassign a phone number to a device under their control, TechCrunchreportedat the time. The hackers collected data on 7.8 million users.

Related:The How-To: Protect Your Business From A Data Breach

Madeline Garfinkle

Entrepreneur Staff

News Writer

Madeline Garfinkle is a News Writer at Entrepreneur.com. She is a graduate from Syracuse University, and received an MFA from Columbia University.

Editor's Pick

Related Topics

Business News

亚马逊是提高支付交付Dri萎缩vers—Starting as Soon as Next Month

The company is raising the average hourly rate for delivery drivers to $20.50 by mid-October.

Business News

'Worst Investment Ever': The 'Brady Bunch House' Sells to Real-Estate Enthusiast for $3.2 Million

The famous Studio City, California residence known as "The Brady Bunch" house recently changed hands from television network HGTV to California resident Tina Trahan.

Business Ideas

55 Small Business Ideas to Start in 2023

We put together a list of the best, most profitable small business ideas for entrepreneurs to pursue in 2023.

Business News

'People Have Died Where You Are': Influencer Slammed for Photoshoot in 'Prohibited' Deadly Cave

El Tancón cave is located in Santiago del Teide in Tenerife, Spain.

Business Ideas

2 Grammy-Nominated Musicians Share What They Consider the Greatest Assets to Any Startup

From music to skincare, learn the unconventional journey of Mike Einziger and Ann Marie Simpson-Einziger.

Business News

Major Media Company Hiring Taylor Swift, Beyoncé Reporters to Go Backstage at Tours, Get 'Inside View' of New Music

USA Today and the Tennessean are seeking cultural mavens for the new positions.