Hey, to be honest you should take a look at methods of halting spam by being significantly less of a target, rather than dealing with the spam programs when they are tapping at your web-site
The trouble with open source engines just like Joomla,Wordpress etc is bot runners scanning for susceptible web sites for spamming comments or security risks to insert malware he or she can do that since all of these opensources by default leave an electronic digital foot print on top search engines for example Bing and google, I’ve written and published a post in regards to this on my small internet site you should check it out, its certainly ideal for halting spam and malicious software, prevent being a targetable target for them
steven haytor