Russian hackers took control of a Norwegian dam this year, opening a floodgate and allowing water to flow unnoticed for four hours, Norway’s intelligence service has said.
The admission, by the Norwegian Police Security Service (PST), marks the first time that Oslo has formally attributed the cyber-attack in April on Bremanger, western Norway, to Moscow.
The attack on the dam, which which is used for farming fish, released 500 litres (132 gallons) of water a second for four hours until the incident was detected and stopped.
The head of PST, Beate Gangås, said on Wednesday: “Over the past year, we have seen a change in activity from pro-Russian cyber actors.” The Bremanger incident was an example of such an attack, she added.
“The aim of this type of operation is to influence and to cause fear and chaos among the general population. Our Russian neighbour has become more dangerous.”
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