"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.

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.

FBI Director Christopher Wray said the agency's Cyber Action Team disrupted a second Chinese hacking group that had infiltrated thousands of devices.