Yeah I too found the same thing in my browser : I downloaded Spyware Doctor trial version and then downloaded -
http://www.securitystronghold.com/gates/landing.domainsponsor-cookie.html Edit: disabled link.
http://www.mywot.com/en/scorecard/se...stronghold.com
Because you can't remove stuff in the trial mode. But now as I rescan the Spyware Doctor shows a Rogue.Anti-spyware product - antispyware which must be what I've downloaded. The risk level is High
Please refer : http://www.pctools.com/en/mrc/infections/id/Spyware.Known_Bad_Sites