Tor Blocker stands for limiting actions to the users that came from Tor exit nodes.
Most of the time Tor exit nodes are used to enumerate vulnerabilities of our online product, to perform attack or to be used as a spam source. This plugin allow us to limit the actions that coud be performed by the users that are coming from a Tor exit nodes using http://hqpeak.com/torexitlist/ free service. Could be upgraded to premium or could be set up any url to service that will give you response in the described json format. Premium list is updated on every 5 minutes, free on 5 h and has its own caching mechanism so isn't affect the speed of the WP instance.
With this plugin you can apply following constraints to the Tor visitors:
Or to ban any action by its name / key e.g. not allow accessing resources defined by some GET or POST key.