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The disruption to GPS services started getting worse on Christmas Day. Planes and ships moving around southern Sweden and Poland lost connectivity as their radio signals were interfered with. Since then, the region around the Baltic Sea—including neighboring Germany, Finland, Estonia, Latvia, and Lithuania—has faced persistent attacks against GPS systems.
Tens of thousands of planes flying in the region have reported problems with their navigation systems in recent months amid widespread jamming attacks, which can make GPS inoperable. As the attacks have grown, Russia has increasingly been blamed, with open source researchers tracking the source to Russian regions such as Kaliningrad. In one instance, signals were disrupted for 47 hours continuously. On Monday, marking one of the most serious incidents yet, airline Finnair canceled its flights to Tartu, Estonia, for a month, after GPS interference forced two of its planes to abort landings at the airport and turn around.
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