Federal authorities announced Tuesday that they have erased Chinese malware from thousands of computers across the United States.

After obtaining the necessary court orders, the researchers, together with the Cyber Division of the Paris Prosecution Office, French Gendarmerie Cyber Unit C3N, the FBI, and the DoJ, ran the campaign and successfully removed the malware from infected computers.

The FBI hacked about 4,200 computers across the US as part of an operation to find and delete PlugX, a malware used by state-backed hackers in China to steal information from victims, the Department of Justice announced on Tuesday.