Norway’s domestic intelligence service, PST, has concluded that pro-Russian hackers were responsible for a cyber sabotage attack on a Norwegian dam in the spring of 2025, VG reported on August 13.
PST Director Beate Gangås said the service believes the April 2025 incident at a dam in southwestern Norway was carried out by pro-Russian hackers. The attack targeted the dam on Lake Risvatne, where cybercriminals seized control of the system, forcing the gates to remain open for four hours and releasing large volumes of water before staff detected the breach and intervened.
“Over the past year, we have seen a change in the activity of pro-Russian cyber actors. In April, a dam in western Norway became the target of such an operation… Our Russian neighbor has become more dangerous,” Gangås said.
She noted that Russia uses a variety of methods in its activities against Norway and other Western countries.
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“This can include subversive activity, influence, polarization, covert intelligence gathering—methods aimed at weakening our security, but which cannot be characterized as acts of war… The goal is to influence Norwegian society, create a sense of unrest and instability, and identify our strengths and weaknesses,” she explained.
Gangås added that similar operations are expected to continue across Europe.
“They do not necessarily aim to cause damage, but rather to demonstrate what they are capable of,” the intelligence chief said.
Earlier, Estonia expelled the first secretary of the Russian Embassy in Tallinn, declaring the diplomat persona non grata for actions deemed to undermine the country’s constitutional order.







