Do not show password, during login, on an insecure channel (without SSL). Use a SHA-256 hash algorithm.
Only store one when the uploaded file is same.
Sanitize and rename automatically media files during upload using PHP time() as prefix and the file name encrypted in MD5() as suffix.
Changes the password hashing in WordPress to use MD5
This plugin from WPZA provides your website randomised file names when you upload files into WordPress.
Semisecure Login increases the security of the login process using client-side MD5 encryption on the password when a user logs in.
This plugin shows the password field (with MD5 Encryption) in the table of the Users section in the WordPress dashboard.
External Login allows users to log in to the WordPress site with a different database of users.
Do not show password on login page.
Simply convert string to md5, this plugin helps you to convert string into md5 format.