Norwegian intelligence officials have attributed a cyberattack on a hydroelectric dam in Norway to pro-Russian hackers. The incident occurred on April 7, 2025, when the hackers briefly took control of the dam's systems, opening a floodgate and releasing water at a rate of 500 liters per second for nearly four hours. Despite the unauthorized access and water release, no physical damage was reported. This marks the first time Norway has publicly blamed Moscow for such a cyber intrusion targeting critical energy infrastructure. The event underscores growing concerns about cybersecurity threats to national energy systems in the region.