acemi - 12:07 pm on Dec 31, 2010 (gmt 0)
If you use ModSecurity 2.x, here is a rule to serve that scoutjet user agent a 403 Forbidden page.
SecRule HTTP_User-Agent "ScoutJet" "deny,log,status:403"
After I added this rule I realised the extent of their bot's crawling with hundreds of 403s in the log. This should keep them away from now on.