The FBI has successfully disrupted a 20-year-old malicious software network used by the Russian government to spy on hundreds of computers across 50 countries. The agency used a digital tool called "Perseus" to turn the malware's functionality against itself and force the program to self-destruct on infected computers. Senior law enforcement officials said the FBI's court-authorized neutralization of the Kremlin-backed hackers in the U.S. succeeded, disabling the malware on an undisclosed number of American computers.
