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rurban 14 hours ago [-]
Side-channel ignorance: none of the SW solutions are properly zeroing the data. Side-channels can still read them. SW vendors refuse to do that because of performance. Clearing the caches is too expensive.
throwaway81523 16 hours ago [-]
All the really high end stuff is in financial data centers anyway, surrounded by TV cameras 24/7. Tamper reactance in the HSM itself is cool and everything but the surrounding security handles a lot of what the HSM is made to do.