Poland has successfully foiled a cyberattack targeting the National Centre for Nuclear Research (NCBJ) in Świerk.

Key Details of the Incident

• Target: The attack focused on servers at the facility that houses Poland’s only operating nuclear reactor, MARIA.
• Impact: Polish authorities confirmed the attempt was unsuccessful. No data was leaked, and the reactor continued to operate safely at full power throughout the event.
• Attribution: Preliminary findings by the Polish Internal Security Agency and digital services point to Iran as the likely source, based on identified entry vectors.
• Geopolitical Context: The incident follows a period of heightened tensions, including reported February 2026 airstrikes on Iran and subsequent retaliatory Iranian cyber operations against several NATO members.

Investigation Status

While current indicators link the breach to Iranian territory, Digital Affairs Minister Krzysztof Gawkowski cautioned that these signs could be deliberate misdirection or “false flags” designed to conceal the attackers’ true identity. A full investigation by internal security teams is ongoing.

Poland has faced a sharp increase in cyber threats recently, including a major Russian “wiper” attack in January 2026 that targeted the national energy grid.