[stormhill]

Fine. Here's another way of looking at the same thing: We're better at it than they are; in short, fight fire with fire and scramble their systems. When they inevitably squeal about it being an act of war, bring out their transgressions and tell them we'll stop when they do.

Too late to stop their catch-up? Maybe but when they get here, we'll have leapt forward. All it takes is will.

[Spktyr]

Not always the case. In a recent documented issue, US military ships operating around Hong Kong were fed inaccurate GPS positions and were unable to localize the spoofing. Chinese ships appeared unaffected.