wPadlock is free a Wordpress plugin and a web service you can use to make your Wordpress website more secure. Learn more here.
Make an impact on your website's security. Use wPadlock on your Wordpress based website completely free of charge.
No ads, no popups, but your support is welcome to keep the service alive and provide the developer with cookies.
The plugin will add an additional PIN field to your login form, therefore reducing the chance of Brute Force Attacks being successful.
Only you know the username/password for your website, wPadlock helps by providing a randomly generated PIN.
Login won't work until you request to generate a PIN. You can disable the security at any time, you have full control.