This is the ninth known cyberattack to target T-Mobile in recent years, according to an ongoing count by TechCrunch.

Mobile's network was among the systems hacked in a damaging Chinese cyber-espionage operation that successfully gained entry into multiple U.S. and international telecommunications companies, The Wall Street Journal reported on Friday citing people familiar with the matter.

T-Mobile US Inc.’s network was among those recently breached by Chinese hackers in an attack on multiple telecommunications companies, the Wall Street Journal reported.

T-Mobile, one of the biggest cellphone carriers in the United States, was targeted in a massive hacking attack linked to Chinese cyber-espionage. The hackers, believed to be connected to a Chinese intelligence agency,

T-Mobile's network was among the systems hacked in a damaging Chinese cyber-espionage operation that gained entry into multiple U.S. and international telecommunications companies, The Wall Street Journal reported Friday.

US says Chinese hackers breached telecom networks, stealing data and tapping political figures’ calls, fueling concerns over infrastructure security and cyber warfare.