Comment on Time Station EmulatorparentComments−lxgr7moSatellite-based time signals also seem easier to spoof, given the inherent power constraints of the transmitters.That said, newer ones can use authentication, which (together with a reasonably accurate local oscillator) can prevent at least trivial spoofing.−WorldMaker7moThe most common satellite-based time signal today is GPS and global navigation system signals are possible to spoof, but it is harder than "trivial" at least.
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Satellite-based time signals also seem easier to spoof, given the inherent power constraints of the transmitters.
That said, newer ones can use authentication, which (together with a reasonably accurate local oscillator) can prevent at least trivial spoofing.
The most common satellite-based time signal today is GPS and global navigation system signals are possible to spoof, but it is harder than "trivial" at least.