Any security for spam comments ?

https://www.ioerror.us/software/bad-behavior/

That and SpamKarma 2 are all you need ??

any small story of what bad behaviour does ?

Blocks spam bots from accessing your site.

Totally blocks spam bots!!

ah thanks guys,good to know this community finaly took care of those idiots..

Well not totally, but one or two is minor, when it does block on average (on my site) over a thousand hits a week.