CE Oltenia is a organization tracked across 1 threat cluster and 1 intelligence report mention on ThreatCluster. First observed December 29, 2025; most recent activity December 29, 2025.
On December 26, 2025, Oltenia Energy Complex, Romania's largest coal-based energy producer, suffered a ransomware attack known as 'Gentlemen'. The attack disrupted the company's IT infrastructure, encrypting several…