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 U.

"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 U.S. Federal Bureau of Investigation, in collaboration with other agencies, has disrupted a botnet that consisted of more than 200,000 consumer devices worldwide.