Since early 2025, multiple undersea communication cables in the Baltic Sea that carry critical internet and military data for Europe have suffered sabotage, raising concerns over Russian operations beneath the sea. Swedish, Finnish, and Danish authorities detected damage consistent with deliberate acts aiming to disrupt digital connectivity vital to NATO and EU. The attacks include cutting of fiber optic cables and interference with network infrastructure. These deepsea sabotage operations represent a novel and high-risk tactic in Russia's hybrid warfare arsenal, directly threatening Europe's security and communications infrastructure. European governments and NATO are increasing surveillance, deploying naval patrols, and enhancing cooperation to prevent further attacks and secure maritime digital lifelines.

Since early 2025, multiple undersea communication cables in the Baltic Sea that carry critical internet and military data for Europe have suffered sabotage, raising concerns over Russian operations beneath the sea. Swedish, Finnish, and Danish authorities detected damage consistent with deliberate acts aiming to disrupt digital connectivity vital to NATO and EU. The attacks include cutting of fiber optic cables and interference with network infrastructure. These deepsea sabotage operations represent a novel and high-risk tactic in Russia's hybrid warfare arsenal, directly threatening Europe's security and communications infrastructure. European governments and NATO are increasing surveillance, deploying naval patrols, and enhancing cooperation to prevent further attacks and secure maritime digital lifelines.