https://www.bleepingcomputer.com/news/software/firefox-password-manager-to-be-secured-with-windows-10-credentials/

Mozilla is making changes to the Firefox Lockwise password manager so that users will need to enter their Windows 10 credentials before being allowed to edit or view saved logins.

One of the biggest problems with browser password managers is that they offer no protection from a person who gains local access to a PC.