Hackers breached websites belonging to a Polish state institute that documents Nazi and Communist-era crimes, posting content echoing Russian propaganda and promoting anti-Ukrainian narratives, the institute said. The cyberattack took place overnight, targeting the main website of the Witold Pilecki Institute of Solidarity and Valour as well as sites linked to its branches in Berlin and the northeastern Polish town of Augustów, the institute said on Friday. JOIN US ON TELEGRAMFollow our coverage of the war on the @Kyivpost_official. “The published content was directed against Polish history and intensified anti-Ukrainian narratives,” the institute said in a statement. Its IT team blocked the attack and took the affected websites offline. “The situation has been brought under control. All archives are safe,” the Pilecki institute said. ‘We will not give up’ A security review of all of the institute’s websites is underway, with officials saying they would seek to restore access as soon as possible. “For years, the Pilecki Institute has been actively opposing disinformation, researching the totalitarian regimes of the 20th century, and collaborating with Ukrainian archives and institutions,” the institute said. “The Pilecki Institute will not give up this mission, irrespective of pressure and aggression it has experienced,” it added.