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Re:Israel may have destroyed Iranian centrifuges simply by c... by philwelch on Tuesday April 13, 2021 @04:05PM (#26798399)
> Also, the US Navy started instructing enlisted seamen how to navigate at sea by the stars, in case GPS stops working.

Is the threat model there that someone hacks the GPS signal, or that someone shoots down the GPS satellites? Lots of countries have ASATs these days.

Re:Israel may have destroyed Iranian centrifuges simply by c... by sharikous on Tuesday April 13, 2021 @05:50PM (#26799809)
Even an idiot can jam GPS. A little more sophisticated attack would be spoofing it, still doable (just a Google search away)
Re:Israel may have destroyed Iranian centrifuges simply by c... by monocasa on Tuesday April 13, 2021 @04:33PM (#26798870)
Probably jamming. GPS signals are very faint, and on fixed frequency bands.