this post was submitted on 27 Oct 2023
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Imagine a site telling you "Sorry, you can't use
asdf123as your password: you've already used it on that other site".That's not as far fetched as it sounds. Any website worth its salt will store your password as a hash, so if they started sharing the hashes with each other they could prevent you from reusing passwords without changing much security-wise
Any website worth its salt will salt the hash as well...
It would be better if you had a local tool telling you that - one that you control and only exists on your personal devices, kind of like secure messaging platforms such as Signal.
Another great later would be for all compromised passwords found in breaches to never be usable anywhere ever again, thus helping to thwart the most common form of breach we see today: credential stuffing.
That wouldn't help that much
This was supposed to be a joke; of course it wouldn't.
It's a pretty old meme, hunter11, but it checks out.