According to the review, Finland is not currently being targeted by exceptional information influence and is not a primary target of Russia. Kremlin influence efforts concentrate on threatening and inflammatory rhetoric about supporting Ukraine and Nato, the report says.

"Had it continued for another 12 minutes, the carnage would have been much worse than the four basic cables that were there," Finnish President Alexander Stubb said.

On Wednesday, the NATO Naval Command announced that two ships would be deployed to the Gulf of Finland as part of the new Baltic Sentry mission, which was established at Tuesday's meeting of Alliance representatives in Helsinki.

Planned Russian military reforms that would increase Moscow's troop numbers by 30% are a threat to NATO and should be met with vigilance, the chief of Finland's military intelligence service Pekka Turunen said on Thursday.

In a post on X, Stubb thanked the outgoing US president for his "steadfast support" in Finland's Nato membership process.

Iceland, lacking its own air force, relies on Nato allies for aerial surveillance and interception capabilities.

Membership in NATO is the only credible long-term security guarantee Ukraine can receive against future Russian aggression, Finland's top diplomat said on Wednesday.

NATO will use uncrewed surface vessels or sea drones to monitor shipping in the Baltic Sea and protect undersea cable infrastructure.

Russia is believed to be behind dozens of hybrid attacks, like arson or sabotage, on NATO soil since the Ukraine war started.

NATO countries will deploy frigates, patrol aircraft and naval drones in the Baltic Sea to help protect critical infrastructure and reserve the right to take action against ships suspected of posing a security threat,

Lithuania is to increase its defense spending to between 5 percent and 6 percent of its GDP from 2026, matching Trump's target.