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 Treasury Department’s Office of Foreign Assets Control (OFAC) announced on Friday that it had sanctioned a China-based cybersecurity company, known as Sichuan Juxinhe Network Technology, which it says is directly linked to the China-backed Salt Typhoon hacking group.

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

Late last year, the FBI and the Cybersecurity and Infrastructure Security Agency had some curious advice for people about texting on their smartphones. Sending texts between an iPhone and an Android device could no longer be considered private,

The espionage hack of at least nine American telecommunication firms — including giants AT&T and Verizon — targeted the Trump campaign, FBI wiretaps and top State Department officials.

A Chinese hack compromised even more U.S. telecoms than previously known, including Charter Communications , Consolidated Communications (CCII.UL) and Windstream, the Wall Street Journal reported late on Saturday,

The U.S. Treasury department on Friday sanctioned Singaporean 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 State and Treasury Departments say Chinese cybersecurity vendor Sichuan Juxinhe is behind the hacks into numerous US telecommunications companies.

The Biden administration on Friday announced sanctions on two Chinese entities accused of cyberattacks, including a firm it said is directly involved in the recent espionage campaign against US telecommunications firms and a hacker behind the recent breach of Treasury Department computers.