https://www.bleepingcomputer.com/news/security/us-sanctions-chinese-firm-for-hacking-firewalls-in-ragnarok-ransomware-attacks/

The U.S. Treasury Department has sanctioned Chinese cybersecurity company Sichuan Silence and one of its employees for their involvement in a series of Ragnarok ransomware attacks targeting U.S. critical infrastructure companies and many other victims worldwide in April 2020.

According to the Department's Office of Foreign Assets Control (OFAC), Sichuan Silence is a Chengdu-based cybersecurity government contractor (recently profiled by the Natto Thoughts team) that provides products and services to core clients like China's intelligence services.