Issue 134

Russia’s Growing GNSS Interference

November 2025: In early November 2025, a series of electronic interference events highlighted potential threats in Eastern Europe and the Baltic region. On November 2, a " mass AIS spoof event " was detected, stretching from Bornholm to the mid-Gulf of Finland. For about 30 minutes, hundreds or thousands of false AIS…

November 2025: In early November 2025, a series of electronic interference events highlighted potential threats in Eastern Europe and the Baltic region. On November 2, a “mass AIS spoof event” was detected, stretching from Bornholm to the mid-Gulf of Finland. For about 30 minutes, hundreds or thousands of false AIS messages flooded public tracking services, with a large portion “masquerading as military vessels”. These false signals were characterized as a “deliberate, coordinated attempt” to inject fabricated data, as they lacked names, IMO numbers, or movement tracks and used dead or decommissioned MMSIs. Analysis indicates the incident was not a glitch but an attack that compromised a single AIS base station in Finland, pushing false data to multiple online services at once. Although it affected only web displays—not live maritime receivers—it showed how exploiting a single ground station can produce a large-scale information operation.

GPS World’s journalist Jesse Khalil explains, “According to confidential sources, a covert Russian military installation in the Królewiec region… is responsible for GPS interference affecting the Baltic states and the Gulf of Finland.”

Khalili goes on to explain, “According to confidential sources, the facility’s primary mission is to monitor satellites and NATO communications, intending to undermine allied intelligence operations. “

“Documents obtained by Delfi indicate that the base, located in Pioniersk, is part of Russia’s ‘Tobol’ electronic warfare network.”

– Further reporting indicates “High GPS jamming” was observed over the Pechora Kamenka former air base in Russia, prompting public speculation about whether this base had been “reactivated”.

GPS World’s journalist Tracy Cozzens also reported in June that Danish News outlets were reporting “In the Gulf of Finland, ships were disappearing from radar and Russian fighter jets were traveling through NATO airspace.”

13 member states of the EU have called on the European Commission to respond to the significant increase in GNSS interference:

  • Lithuania: Mar ‘24: 556 to Jan ‘25 1185 cases (+113%)
  • Latvia: Oct ‘24: 790 to Jan ’25 1288 cases (+63%)
  • Poland: Oct’ 24: 1908 to Jan ‘25 2732 cases (+43%)






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