FBI hacked the ransomware hackers. FBI and Europol took down the infrastructure of the prolific HIVE ransomware. This Law enforcement recovered the decryption keys and shared them with many of the victims, helping them regain access to their data without paying the cyber criminals.
Law enforcement provided the decryption key to companies that had been compromised in order to help them decrypt their data without paying the ransom. This effort has prevented the payment of more than USD 130 million of ransom payments.
Read more here at Europol: https://www.europol.europa.eu/media-press/newsroom/news/cybercriminals-stung-hive-infrastructure-shut-down