Copernicus
Industrial Grade Linguist
The US government and allies have finally managed to hit back at cyberterrorists gangs operating out of Russia (with the apparent blessing of the Russian government). In this case, they focused on REvil, which had attacked a software management company in the summer. Not only did they obtain a general decryption key that allowed the company to get its data back, but they kept that information quiet and pursued the hackers. They managed to infiltrate the gang's servers and shut them down. When the gang later tried to restore their operation from a backup, they discovered that their backup had already been compromised--a technique that the gang had been using against their victims.
Source: EXCLUSIVE Governments turn tables on ransomware gang REvil by pushing it offline
Source: EXCLUSIVE Governments turn tables on ransomware gang REvil by pushing it offline