I don’t know if a temp glitch, but just got errored out for an email/username/password issue and couldn’t log in without a link sent to my email address. Came in and ‘changed’ my password, using the autofill of my previous password (ie didn’t actualy change it), which was accepted, so I don’t know if someone got in and changed mine, or…
If you haven’t already, enable two-factor authentication (2FA) for your account. You’ll need to have either a physical security key or an authentication app to generate a constantly changing time-based one-time password. With 2FA set up, it’s not sufficient for someone to know just your account name and password to log in.
Some security key manufacturers
Yubico (YubiKey, various models)
Some authentication apps
Some dedicated password management programs, e.g., 1Password, and web browsers, e.g., the latest versions of Apple’s Safari, also handle time-based one-time passwords, so you may want to check what you’re already using first. (Full disclosure: I’ve been using 1Password for over a decade as a customer.)