Security analysts say that the internet is not the only network that Russia is probing for vulnerabilities. In recent months, Russia has been accused of interfering with GPS navigation systems ...

Estonia has accused Russia of jamming GPS navigation devices ... The Global Positioning System (GPS) is a network of satellites and other devices that are pivotal for aviation safety.

Norway also reported GPS problems during the exercises near Russia's north-western borders. Russia to 'limit' US GPS satellites US threatens to 'take out' Russian missiles Norway warship 'warned ...

The Baltic Sea, the Black Sea and the eastern Mediterranean - the regions where Russia's military has been most active - have seen an increase in disruption to the Global Positioning System (GPS).