(Bloomberg) -- Suspicious behavior on T-Mobile US Inc.’s network devices tipped off the company to a breach that was potentially part of a sprawling cyber-espionage campaign that has raised ...

(Bloomberg) -- 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 ...

(Bloomberg) -- The government watchdog that oversees foreign investment in the US for the first time named a company it had penalized — telecom giant T-Mobile US Inc. — as it escalated ...