BOSTON — The U.S. wi-fi provider T-Cellular mentioned Thursday that an unidentified malicious intruder breached its community in late November and stole knowledge on 37 million prospects, together with addresses, cellphone numbers and dates of start.
T-Cellular mentioned in a submitting with the U.S. Securities and Trade Fee that the breach was found Jan. 5. It mentioned the info uncovered to theft — based mostly on its investigation to this point — didn’t embrace passwords or PINs, checking account or bank card data, Social Safety numbers or different authorities IDs.
“Our investigation continues to be ongoing, however the malicious exercise seems to be totally contained right now,” T-Cellular mentioned, with no proof the intruder was in a position to breach the corporate’s community. It mentioned the info was first accessed on or round Nov. 25.
T-Cellular mentioned it has notified regulation enforcement and federal businesses, which it didn’t title. It didn’t instantly reply to an e-mail searching for remark.
The corporate has been hacked a number of instances lately. In its submitting, T-Cellular mentioned it didn’t anticipate the newest breach to have materials impression on its operations. However a senior analyst for Moody’s Buyers Service, Neil Mack, mentioned in an announcement that the breach raises questions on administration’s cyber governance and will alienate prospects and entice scrutiny by the Federal Communications Fee and different regulators.
“Whereas these cybersecurity breaches might not be systemic in nature, their frequency of prevalence at T-Cellular is an alarming outlier relative to telecom friends,” Mack mentioned.
In July, T-Cellular agreed to pay $350 million to prospects who filed a category motion lawsuit after the corporate disclosed in August 2021 that private knowledge together with Social Safety numbers and driver’s license information had been stolen. Practically 80 million U.S. residents had been affected.
It additionally mentioned on the time that it will spend $150 million by means of 2023 to fortify its knowledge safety and different applied sciences.
Previous to the August 2021 intrusion, the corporate disclosed breaches in January 2021, November 2019 and August 2018 wherein buyer data was accessed.
T-Cellular, based mostly in Bellevue, Washington, turned one of many nation’s largest cellphone service carriers in 2020 after shopping for rival Dash. It reported having greater than 102 million prospects after the merger.