The U.S. has sanctioned Sichuan Silence, a Chinese cybersecurity firm involved in ransomware attacks targeting critical infrastructure in 2020. One of its employees, Guan Tianfeng, has also been charged individually.

Justice officials from Brazil and the U.S. are investigating Fog, a new ransomware group that attacked Brazilian government institutions in July.

The United States sanctioned a Chinese cybersecurity company over an ambitious cyberattack that U.S. Treasury officials say could have killed people.

The US has sanctioned Chinese cybersecurity firm Sichuan Silence and its employee, Guan Tianfeng, for a massive cyberattack affecting 80,000 firewalls globally, including critical infrastructure. The April 2020 attack involved ransomware and data exfiltration,

Guan Tianfeng represented his employer, a state contractor, in hacking competitions, which analysts fear strengthen China's cyberattack capabilities.

The United States on Tuesday took action against cybersecurity company Sichuan Silence Information Technology Co. and employee Guan Tianfeng for their role in a 2020 breach that compromised firewalls worldwide.

The US sanctioned a Chinese company it accused of working for intelligence agencies and charged one of its employees with hacking into the computer systems of thousands of businesses across the globe,

The US government has imposed sanctions on Chinese cybersecurity firm Sichuan Silence Information Technology and one of its employees, Guan Tianfeng, for their alleged involvement in a 2020 global cyberattack that exploited zero day vulnerabilities in firewalls.

The U.S. Treasury has sanctioned a Chinese cybersecurity firm, Sichuan Silence, and its employee, Guan Tianfeng, for their roles in a 2020 global firewall breach that targeted critical U.S. infrastructure,