Norway police believe pro-Russian hackers were behind April dam sabotage

Norway's PST suspects pro‑Russian hackers (claimed by the group 'Z‑Alliance') sabotaged a small fishery dam in April by breaching its control system and opening valves for about four hours, releasing roughly 500 L/s into the Riselva River. Authorities described the attack as unsophisticated but symbolically significant given Norway's reliance on hydropower, and Russia has denied the allegations while Norway warns of continued Russia-linked subversive activity.