Tor is an invaluable tool for protecting free-speech, privacy, and preventing surveillance but when abused it can protect the identity of malicious users and make tracking their activites more difficult. “Hackers” might use Tor to run security scans on your website or spam websites with comments and fake registrations. The purpose of this plugin is to give you the power to block certain Tor activity from your WordPress site. Features include: Block Tor users from registering on your site Allow Tor registrations, but flag them for review Block logins from Tor (useful for preventing brute force attacks and securing your admin panel) Block Tor users from posting comments to your site Block spammy pingbacks & trackbacks from Tor IP addresses Block Tor users from your entire WordPress site Optionally allow Tor access by solving a CAPTCHA (requires Securimage-WP plugin) Real-time blocking using the Tor DNS exit list service Near real time blocking using a cached blocklist which can be updated every 10 minutes or more Custom blocklist support. Block IP addresses or host networks. Statistics to show how many Tor actions have been blocked by this plugin This plugin is compatible with BuddyPress, the popular Login With Ajax plugin, and Securimage-WP. If there is a feature missing that you would like, request it! If you opt to use the real-time blocking, each IP address looked up is cached for 5 minutes for efficiency. The Tor IP lists that are downloaded only contain “exit node” IP addresses so it is farily small and the list is searched using a binary search so the plugin is very fast! This plugin also provides a shortcode which you can use anywhere on your WordPress site if you’d just like to show a message to Tor users. (e.g. [tor_users]Hi, I see you're using Tor. I support privacy and free-speech too![/tor_users]) Support Tor Tor is a great thing. If you agree, consider volunteering, donating to the Tor project, or expand the Tor network by sponsoring a Tor relay which will be maintained by the plugin author. Support this plugin The author of this plugin values Tor as well as the security of your website. Considerable effort went into the development of this plugin as well as the code and infrastructure that provides you with the up-to-date exit lists. You can support this plugin by installing it, rating it positively, donating to the author, or sponsoring a Tor relay which will be operated by the plugin developer in your honor.