Lyce · Hybrid Watch

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Finland detects satellite-navigation jamming and spoofing in the Baltic Sea.

The Finnish Coast Guard reported continuous disturbances in GNSS/GPS signals over the Baltic Sea since April 2024, with intensified activity in the Gulf of Finland. According to its commander, certain tankers have engaged in AIS (spoofing) by turning off transponders and falsifying their location, apparently to conceal visits to Russian ports. The Finnish Interior Minister stated that Finland “believes Russia is behind” these disruptions, linking them to protection of oil-ports and undersea infrastructure. Vessels lost track of their course or entered shallow waters inadvertently, prompting Finnish authorities to issue warnings to ships at risk. The dynamic of the event reflects hybrid warfare tactics: electronic disruption of navigation rather than conventional weapons. The activity illustrates how maritime and infrastructure domains merge in hybrid operations (spoofing, jamming, dark fleet activity). Finland responded with raised maritime-domain awareness, increased AIS monitoring, and allied cooperation on submarine- and seabed-infrastructure defence. This incident broadens the Finnish catalogue of hybrid threats beyond air-space and cyber into the maritime/electronic-navigation domain, underlining the evolving challenge in the Baltic region.

Occurrence
2024-10-31
Publication
2024-10-30T23:00:00Z
First observed
2026-09-24T06:09:10.079Z
Review status
Not assessed
Countries
FI
Updated
2026-09-27T23:56:59.668Z

E/M/R/S scores

  • EExistence0/4 · Not assessed
  • MIntent0/4 · Not assessed
  • RRussian actor link0/4 · Not assessed
  • SRussian state responsibility0/4 · Not assessed

Facts

No facts

Sources

  1. Role
    discovery_lead
    Date
    2024-10-30T23:00:00Z

    The Finnish Coast Guard reported continuous disturbances in GNSS/GPS signals over the Baltic Sea since April 2024, with intensified activity in the Gulf of Finland. According to its commander, certain tankers have engaged in AIS (spoofing) by turning off transponders and falsifying their location, apparently to conceal visits to Russian ports. The Finnish Interior Minister stated that Finland “believes Russia is behind” these disruptions, linking them to protection of oil-ports and undersea infrastructure. Vessels lost track of their course or entered shallow waters inadvertently, prompting Finnish authorities to issue warnings to ships at risk. The dynamic of the event reflects hybrid warfare tactics: electronic disruption of navigation rather than conventional weapons. The activity illustrates how maritime and infrastructure domains merge in hybrid operations (spoofing, jamming, dark fleet activity). Finland responded with raised maritime-domain awareness, increased AIS monitoring, and allied cooperation on submarine- and seabed-infrastructure defence. This incident broadens the Finnish catalogue of hybrid threats beyond air-space and cyber into the maritime/electronic-navigation domain, underlining the evolving challenge in the Baltic region.