Fun fact: traffic lights have a software free security mechanism, even a botched software can't make it green in all directions. Only safe states are ever allowed.https://twitter.com/SteveBellovin/status/962506016331108352 …
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Also, I'm totally lying: it's a safety system, which just happens to stop security issues.
If I had to pick between failsafe and encrypted communication, I’d pick the failsafe in this case :)
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