Others have already pointed out that removing any "login with Twitter" access is probably a good idea right about now.
But there's a deeper lesson here: "what if the unaccountable tech company you're trusting to authenticate you goes rogue" is not a hypothetical.
It's probably a good idea to avoid using this sort of "login with _____" feature elsewhere as well.
@joepie91 is there an easy way to find places where I use Twitter to authenticate? I hope I never fell for it, or cleaned those when I got a bit more informed.
@wheeze_NL I *think* you can find them under 'authorized apps' in your account security settings or something along those lines
@joepie91 this is exactly why you NEVER make personal accounts on an email address managed by your work or school, not just because it's against policy, but because they could use your personal account without your permission