"The government’s malware disabling commands, which interacted with the malware’s native functionality, were extensively tested prior to the operation," according to the DOJ.

The FBI has used a court order to seize control of a network of hundreds of thousands of hacked internet routers and other devices that Chinese government-linked hackers were using to threaten critical infrastructure in the US and overseas,

U.S. law enforcement has disrupted a second major Chinese hacking group nicknamed "Flax Typhoon" and wrested thousands of compromised devices from its grasp, FBI Director Christopher Wray said on Wednesday.