Force to use STRONG users password and implement rule to prevent REUSE [closed]

You might want to start here https://codex.wordpress.org/Customizing_the_Login_Form which discusses customizing the login form, and has info on the code file used therein. You will need to ‘hook’ into the login form using available hooks (also detailed at the above link). Also, my comment above: “Password history rules imply that you will need to save previous … Read more