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.

The U.S. Department of the Treasury's Office of Foreign Assets Control (OFAC) has sanctioned Yin Kecheng, a Shanghai-based hacker for his role in the recent Treasury breach and a company associated with the Salt Typhoon threat group.

The U.S. Treasury Department has sanctioned Yin Kechen and Sichuan Juxinhe Network Technology Co. for their alleged involvement in 'Salt Typhoon,' a series of hacks compromising American telecom companies.

The U.S. Treasury department on Friday issued cyber-related sanctions related to the Salt Typhoon hack on Singaporean Yin Kechen and cybersecurity company Sichuan Juxinhe Network Technology Co., according to a statement.

The outgoing head of the Federal Communications Commission said a massive Chinese-linked cyber-espionage operation against U.S. telecoms firms known as "Salt Typhoon" is a "clarion call" to address significant telecommunications security issues.

The State and Treasury Departments say Chinese cybersecurity vendor Sichuan Juxinhe is behind the hacks into numerous US telecommunications companies.

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