1) FTX *requires* 2FA in order to deposit. Why?
Well, it turns out that LOTs of people's usernames and passwords are basically public. If 10 years ago you signed up for some random website and it got hacked, your UN/PWD are probably for sale right now.
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3) This makes it possible for someone to just buy a huge dataset of usernames/passwords and try them *all* to see if someone re-used.
