On 12 March 2026, Polish authorities reported an unsuccessful cyberattack against the National Centre for Nuclear Research (Narodowe Centrum Badań Jądrowych, NCBJ) in Poland. Early technical indicators suggested that the activity was likely linked to Iran, although officials publicly cautioned that the Iranian nexus could be deliberate misdirection. According to statements from the Centre, the integrity of its systems was not compromised. The incident followed, and was contextualised alongside, a separate confirmed Iran-linked cyberattack against US medical-device company Stryker that disrupted Microsoft systems for thousands of employees. The NCBJ incident is part of a broader pattern of Iran-linked disruptive and retaliatory cyber operations, some of which have targeted critical sectors including research, energy, health, government, and telecommunications in NATO and partner countries. Despite being reported as unsuccessful, the targeting of a national nuclear research centre raises concern about reconnaissance or prepositioning activity against sensitive energy and research infrastructure in a NATO member state.

On 12 March 2026, Polish authorities reported an unsuccessful cyberattack against the National Centre for Nuclear Research (Narodowe Centrum Badań Jądrowych, NCBJ) in Poland. Early technical indicators suggested that the activity was likely linked to Iran, although officials publicly cautioned that the Iranian nexus could be deliberate misdirection. According to statements from the Centre, the integrity of its systems was not compromised. The incident followed, and was contextualised alongside, a separate confirmed Iran-linked cyberattack against US medical-device company Stryker that disrupted Microsoft systems for thousands of employees. The NCBJ incident is part of a broader pattern of Iran-linked disruptive and retaliatory cyber operations, some of which have targeted critical sectors including research, energy, health, government, and telecommunications in NATO and partner countries. Despite being reported as unsuccessful, the targeting of a national nuclear research centre raises concern about reconnaissance or prepositioning activity against sensitive energy and research infrastructure in a NATO member state.