Romanian energy provider hit by Gentlemen ransomware attack

BleepingComputer

December 29, 2025 at 2:26 PM

Actively Exploited

Overview

On December 26, 2023, the Oltenia Energy Complex, Romania's largest coal-based energy producer, fell victim to a ransomware attack attributed to the Gentlemen ransomware group. The attack severely disrupted the company's IT infrastructure, impacting its ability to operate effectively. Although specific details about the extent of the damage or data breaches have not been disclosed, the incident raises concerns about the vulnerability of critical infrastructure to cyber threats. As energy providers are essential for public services, such attacks can significantly affect energy supply and operational stability. Authorities and cybersecurity experts are likely to investigate the incident further to understand its implications and improve defenses against similar attacks in the future.

Key Takeaways

Active Exploitation: This vulnerability is being actively exploited by attackers. Immediate action is recommended.
Affected Systems: Oltenia Energy Complex IT infrastructure
Timeline: Newly disclosed

Original Article Summary

A ransomware attack hit Oltenia Energy Complex (Complexul Energetic Oltenia), Romania's largest coal-based energy producer, on the second day of Christmas, taking down its IT infrastructure. [...]

Impact

Oltenia Energy Complex IT infrastructure

Exploitation Status

This vulnerability is confirmed to be actively exploited by attackers in real-world attacks. Organizations should prioritize patching or implementing workarounds immediately.

Timeline

Newly disclosed

Remediation

Not specified

Additional Information

This threat intelligence is aggregated from trusted cybersecurity sources. For the most up-to-date information, technical details, and official vendor guidance, please refer to the original article linked below.

Related Topics: This incident relates to Ransomware, Vulnerability, Critical.

Read Original Article

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