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T-Mobile opens up about how it stopped that major cyber attack

Can T-Mobile finally shake off its troubled past with security?
By

Published onNovember 27, 2024

T Mobile logo on smartphone with colored background stock photo
Edgar Cervantes / Android Authority
TL;DR
  • T-Mobile has detailed how it successfully prevented a recent cyberattack that targeted its edge-routing infrastructure.
  • The company’s Chief Security Officer assured the public that no sensitive customer data was accessed during the attempted intrusion.

T-Mobile, a company that has faced numerous data breaches in recent years, appears to have successfully defended itself against a sophisticated cyberattack. The company, which experienced as many as nine data breaches since 2019, recently detected and neutralized an attempted intrusion into its systems.

Today, T-Mobile Chief Security Officer Jeff Simon disclosed in a blog post that the attack originated from a compromised wireline provider’s network that was connected to T-Mobile’s infrastructure. Simon emphasized that the company’s robust defenses prevented the attackers from accessing sensitive customer data, including call records, voicemails, and text messages.

“Our defenses worked as designed,” Simon stated, highlighting the company’s layered network design, proactive monitoring, and collaboration with cybersecurity experts. He further explained that T-Mobile promptly severed connectivity to the compromised provider’s network and reported the incident to government authorities.

While the attackers’ identity remains unclear, Simon acknowledged the possibility of their connection to “Salt Typhoon,” a group reportedly linked to Chinese state-sponsored operations. This group is believed to be responsible for a series of coordinated cyberattacks targeting the telecommunications industry, resulting in the compromise of sensitive customer information, particularly from government officials.

T-Mobile, however, maintains that its customers' data remains secure.

Simon attributed this success to the company’s significant investment in cybersecurity infrastructure following previous incidents. Furthermore, Simon highlighted the security advantages of T-Mobile’s 5G standalone technology, which offers advanced device authentication, encryption, and privacy protections.

This incident comes on the heels of a $31.5 million settlement between T-Mobile and the FCC regarding previous data breaches. The settlement requires T-Mobile to invest half of the amount in cybersecurity enhancements.

T-Mobile’s ability to thwart this attempted breach may signal a turning point in its cybersecurity journey. Yet, as cyber threats grow more complex and pervasive, the company’s resolve will undoubtedly continue to be tested.

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