When you type in your password to log in, the same hash function is run on the word you've entered, ... You can experiment with hash values using Python, ...

The MD5 password hash algorithm is "no longer considered safe" by the original software developer, a day after the leak of more than 6.4 million hashed LinkedIn passwords.

Some of the projects that use MD5 as the default method for storing user passwords include WordPress, osCommerce, SuiteCRM, miniBB, SugarCRM, CMS Made Simple, MantisBT, Phorum, Observium, and ...