The Password Manager should record all passwords unless you tell it not to. What do you mean by; unsafe ?

Do you mean saving a username and password on an insecure HTTP page? Firefox 51+ will mark HTTP connections with a padlock with a strike through and shows "Connection is Not Secure" if you click the Control Center 'i' button at the left end of the location/address bar. Note that this message is meant as a warning that you could be vulnerable and that it shouldn't prevent (block) you from accessing the website. You can press the ESC key to close a doorhanger with a warning message in the name and password field. See also: *https://support.mozilla.org/en-US/kb/insecure-password-warning-firefox *https://support.mozilla.org/en-US/kb/how-do-i-tell-if-my-connection-is-secure *https://support.mozilla.org/en-US/kb/what-does-your-connection-is-not-secure-mean