Operation Sword 26 is a threat campaign tracked across 1 threat cluster and 1 intelligence report mention on ThreatCluster. First observed May 15, 2026; most recent activity May 15, 2026.
In May 2026, a multinational cyber defense exercise named Immediate Response 2026 took place in Estonia, involving U.S. and NATO Allied and partner forces. The exercise simulated cyber threats to critical…