Larger vessels are just as vulnerable to these manipulations. In 2017, a tanker in the Black Sea had its navigation system indicate that it was suddenly in a completely different and unlikely place: at an airport 30 kilometers from its actual location at sea. ships were affected by this temporary attack, which Russians are now believed to have experimented with new approaches to cybersecurity breaches. GPS signals are routinely jammed in areas immediately around the Kremlin in Moscow, but this Black Sea issue was the largest real and successful spoofing effort known to date.

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