Since the 2014 annexation of Crimea, Russia has reportedly been blocking the GNSS signals beamed down to Ukraine, cutting the country off from position, navigation, and time services. Then, in 2017, 20 vessels in the Black Sea reported that their GNSS signals had been spoofed to indicate they were more than 32 kilometers inland, prompting reports that Russia was testing a new type of electronic warfare.
“The risk [of GNSS outages] is bigger now, because of the geopolitical situation, which gives certain national actors a certain interest in disturbing GNSS,” Kohn explains. “So, if you have a critical application—meaning critical in the sense of national interest—I am doubtful that only
→ Continue reading at Wired - Science