Extension:AntiSpoof

AntiSpoof is an extension for preventing confusable usernames from being created.

Extension:AntiSpoof/Equivalence sets

Install
Download the *.php, equivset.ser and the patch-antispoof.sql from SVN. Upload the files to the extension directory. point to that location within LocalSettings.php require_once( "$IP/extensions/AntiSpoof/AntiSpoof.php" ); Import patch-antispoof.sql into database. (Keep TYPE=InnoDB because Key is more than mysql can handle)

Note: equivset.ser is set to null Username "Exampla" will be created and regardless if username "Example" is in the database. However, Login error: "??=?" (special characters ) is not allowed to prevent confusing or spoofed usernames: Contains unassigned or deprecated character. Please choose another name.

Alternative mysql table
You could dump this table in and at your own risk!