Cyberattack at Eesti Energia, Estonia

April 5, 2023


The website and online channels of state electricity generator Eesti Energia and some of its related companies are offline following a large-scale denial of service attack thought to have been conducted by pro-Kremlin hackers. The attack has affected Eesti Energia's site and mobile app, and also grid maintenance firm Elektrilevi's website, and its MARU mobile app, ERR reports.

At a little before 10.15 a.m. Saturday morning the State Information System Authority (RIA) discovered that the online services of five Estonian companies had started malfunctioning, including those of Eesti Energia. "Due to these attacks, in addition to the Eesti Energia's site, websites included those of Elektrilevi and [Eesti Energia subsidiary] Enefit Green." The incidents coincided with similar and simultaneous attacks on key sites in Latvia, Poland and Ukraine.

Incident Date

November 19, 2022



Estimated Cost

No cost values disclosed.

Type of Malware

No Malware identified

Threat Source

No threat source identified