T-Mobile US Inc. successfully thwarted a recent network breach that could have compromised customer data, according to anonymous sources. The hackers gained unauthorized access to some devices but were expelled from the system before sensitive information could be accessed. This attack is speculated to be linked to Salt Typhoon, a Chinese hacking group targeting U.S. telecommunications firms, although T-Mobile has not confirmed the identity of the perpetrators. U.S. officials have raised alarms about a broader cyber-espionage campaign attributed to Chinese state-sponsored hackers aimed at critical communications infrastructure.