thank you.
The Firefox password manager can be secured with a master password that encrypts everything in your browser password store. Believe it's pretty secure if you set this password otherwise it's almost akin to having passwords stored in plain text.
+1 for bitwarden
It's encrypted over Firefox Sync though, regardless of if you set a master password.
The master password is only needed if you don't have complete physical security (or your machine is hacked)
Curious if OP was more interested in how secure the Sync feature is vs the manager itself. Sync requires trusting that Mozilla aren't the bad guys.
It only uses Sync if you set up a Mozilla account. If you prefer not to do that, you can still set a Primary Password and the passwords will remain local on your machine, encrypted: https://support.mozilla.org/en-US/kb/how-firefox-securely-saves-passwords
IMO yes. It's stored encrypted on their sync service, and you can additionally encrypt it locally too by setting a master password in FF settings.
Didn't notice any mention that you can actually self host Firefox's browser sync service yourself. Personally haven't tried, but IIRC there's setup docs on Mozilla's github
I self hosted the sync service for awhile, but I think its broken now.
I don't know if Firefox's is safe but I use and love KeePassXC:
https://keepassxc.org/
If baffles me one is as tech enthousiast to be on the privacy Lemmy; but has never heard of a password manager.
On topic: Bitwarden is the way, like others have mentioned before me. It has delivered on all my needs for a manager for a couple of years now.