I’m very worried someone has synced all my usernames and password off my browser using this account. Should I be worried?? there are multiple failed attempts to login, in the screenshot attached. If this account was a Firefox service then why did I get an email all of a sudden and never before? There is nothing about this FIREFOX-SYNC-CLIENT online apart from a GitHub article here: https://github.com/Mikescher/firefox-sync-client it feels like a hacker might of used this sync method to steal my my saved Usernames and passwords. I'm worried and thought i'd ask before I change all my passwords.