HoneyPot V2.1 Antibot module is an integrated antibot system for the Nuke CMS system.
This system works on two primary levels. First level is to protect from what is known. This includes using information from your local DB that the HP builds along with using three different API's out there that log all the known bots by email and IP and allows this system to match the IP and email to the list to see if it there. If they are found to be on the list, it will stop them from registering on your site and it will mark them in the HP as a known bot.
The second level is protection from the unknown bots out there. This is done by using several strategy to trick the bot into failing. These are proven strategy that bot programs have had the difficulty bypassing. Some bots have been programmed to get around a couple of the checks, but they have n't been able to get by all of them. Overall, if you want the best overall protection for your site, there is nothing out there that is comparable to this script.