Cybersecurity incident — 2023-12-12 00:00:00
Affected organization: Russian Federal Taxation Service
Affected country: Russian Federation
Industry: Public Administration
Event type: Mixed
Event subtype: Exploitation of Application Server
Motive: Sabotage
Actor: Ukraine's defense intelligence directorate (GUR)
Actor type: Nation-State
Actor country: Ukraine

Ukraine's defense intelligence directorate (GUR) says it infected thousands of servers belonging to Russia's state tax service (Russian Federal Taxation Service - FNS) with malware, and destroyed databases and backups.