Hellenic National Defense General Staff is a organization tracked across 1 threat cluster and 1 intelligence report mention on ThreatCluster. First observed April 15, 2026; most recent activity April 15, 2026.
A hacking campaign attributed to a Russia-linked group, likely Fancy Bear, compromised over 284 email accounts belonging to Ukrainian prosecutors and investigators from September 2024 to March 2026. The breach was…