Cybersecurity

T-Mobile Caught Hackers Early, Averting Data Leak

  • Carrier contained intrusion before it reached customer devices
  • US has warned of broad cyberspying against telecommunications

A T-Mobile store in New York.

Photographer: Gabby Jones/Bloomberg
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T-Mobile US Inc. was able to contain a recent network breach before it reached customers’ phones, according to people familiar with the matter.

Hackers accessed edge-routing infrastructure and gained unauthorized access to a limited number of devices, including a T-Mobile-owned-and-operated router, according to the people, who asked not to be identified discussing nonpublic information. When T-Mobile detected the suspicious activity, it booted the hackers from its systems.