T-Mobile says defenses blocked Salt Typhoon attack from accessing sensitive customer data
TMUS•T-Mobile said it contained a late-2024 Salt Typhoon cyberattack before attackers could access sensitive customer data. The company said attempted intrusions rose 37% over a recent 12-month period, credential-based attempts fell 35%, and successful SIM swap attacks declined more than 99% since 2022.
1. Attack contained
T-Mobile said it contained a late-2024 cyberattack by state-sponsored Salt Typhoon before attackers could access sensitive customer data. The attackers entered through a third-party wireline provider, impersonating a trusted router at the network’s edge.
2. Security measures
T-Mobile said attempted intrusions rose 37% over a recent 12-month period, while credential-based attempts fell 35%. Successful SIM swap attacks declined more than 99% since 2022 following layered authentication measures.
