An easy to use wordpress Captcha plugin to prevent spam on your site. You can use Image Captcha to protect comments and the admin panel.
Image Captcha plugin is a powerful captcha protection for WordPress login and comment forms. Image Captcha - it's free and easy to use tool that will protect you from spam in the comments and prevent hacking the admin panel. In order to post comments or login, users will have to enter the name of the object in the picture. This prevents spam from automated bots. You can also set a ban by ip-address after three wrong inputs.
If you notice any bugs in the plugins, you can notify us about it and we'll investigate and fix the issue then. Your request should contain URL of the website, issues description and WordPress admin panel credentials.