The U.S. Treasury Department said Sichuan Juxinhe Network Technology Co. was directly involved in the deep compromises of the telecommunications firms.

The U.S. Treasury Department on Friday imposed sanctions on alleged hacker Yin Kechen and cybersecurity company Sichuan Juxinhe Network Technology Co., accusing both of being involved in a series of hacks against American telecom companies.

The Treasury Department has announced sanctions in connection with a massive Chinese hack of American telecommunications companies and a breach of its own computer network.

The U.S. federal government said Friday it's traced the source of Chinese hacker intrusions into telecom networks to a government contractor located in hacking

The U.S. Treasury Department sanctioned alleged hacker Yin Kechen and cybersecurity firm Sichuan Juxinhe Network Technology Co. for their roles in telecom hacks exposing Americans' call logs to Chinese espionage.

The Treasury Department on Friday sanctioned Chinese firm Sichuan Juxinhe Network Technology Co. and Shanghai-based hacker Yin Kecheng for their roles in major hacks that allowed access to sensitive,