Out of curiosity would powerful magnets corrupt the data sufficiently to prevent recovery? My prior understanding was yes, but I’m not sure anymore.
I could be wrong, but I think this is still true if you have a good degausser. I would think it could really scramble a solid state drive.
But preventative high encryption of all sensitive content into a vault is the best measure. It’s gibberish before it even gets recorded and without the key it could take a decade or more to piece back together.