Technology that depends on satellite-navigation signals is increasingly threatened by attack
Experts warn that technology reliant on satellite navigation signals is increasingly vulnerable to attack from widely available equipment. At a U.K. conference at the National Physical Laboratory, professor David Last said the global positioning system's (GPS's) biggest vulnerability is the extreme weakness of the signals that reach receivers, which allows jamming by Earth-based equipment to be executed.
Such jamming has been conducted by military systems for years to disrupt adversaries' navigation systems, but small jamming devices are increasingly available online. Moreover, receivers can be fooled into accepting erroneous data by bogus GPS signals, Last warned. Seagoing vessels are especially susceptible to GPS hacking, given that their systems increasingly use satellite navigation directly as well as feed GPS signals into other equipment.
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