Where does Chrome for Mac store its saved usernames (not passwords)?

I tried to log into this site (superuser) today but when I clicked the username box, an email I didn't recognize popped down below mine... this is a work computer but nobody at my workplace recognizes it, and looking it up shows someone we don't know in a different state.

I checked Chrome's password section (in settings), and it's not there; I have no login/password info stored there for this site anyways, and I don't remember when I last used it.

Web searches and searches on StackExchange pointed me to open Chrome's cache or SQLite DB to find the "user history" or autofill, but the info recommended seems outdated and I'm on Mac Mojave now; there's nothing in autofill for this email, and I'm seeing a bunch of possible folders and files to open in DB Browser for SQLite, but I don't know which to open.

The closest answer I can find is here - - but it's from 6 years ago and the path info is either ambiguous (like *) or not matching up (probably because it's just old). Any current accurate info for this would help us squash possibly a security issue. Thank you.

2 Answers

Check the Passwords section under Autofill in the Preferences.

It's better to avoid editing configuration files when you can.

It saves both usernames and passwords within a SQLite 3 database at:

~/Library/Application Support/Google/Chrome/Profile 1/Login Data

But that won't show you anything new, as the contents you've already surfaced in the settings:

chrome://settings/passwords

Still you can strings all those files and grep for stackexchange, but I suspect your issue lies elsewhere.

Is it possible that you have a third-party password manager installed like LastPass?