The Federal Bureau of Investigation (FBI), Cybersecurity and Infrastructure Security Agency (CISA), National Security Agency (NSA), Environmental Protection Agency (EPA), and the Israel National Cyber Directorate (INCD)—hereafter referred to as "the authoring agencies"—are disseminating this joint Cybersecurity Advisory (CSA) to highlight continued malicious cyber activity against operational technology devices by Iranian Government Islamic Revolutionary Guard Corps (IRGC)-affiliated Advanced Persistent Threat (APT) cyber actors.
HSE, Slovenia's largest power utility, has been targetted by a cyberattack that started on Wednesday night and escalated on Friday night. In-house and external experts are working to resolve the situation. The supply of electricity is not jeopardised.