Summary

T-Mobile was targeted in a broad cyberattack linked to Chinese government-backed hackers, Salt Typhoon, as part of a campaign affecting U.S. and global telecom companies, including AT&T, Verizon, and Lumen.

The attack focused on exploiting wiretap systems used for government-mandated data access.

T-Mobile stated there is no significant impact on its systems or evidence of compromised customer data, though it did not confirm whether access logs were reviewed.

The FBI and CISA warned of a “significant cyber espionage campaign” targeting call records and texts of U.S. officials, including presidential candidates.

This marks T-Mobile’s ninth breach in recent years.