[RichieBoy67]

Originally Posted by ForceHSS

I tested my site with htaccess there and removed when it was there I got a warning of malware when removed warning went away

Wow, was there actually malware on your site? Did you see any issues or warnings in webmaster tools under the security tab?
I am a little confused about how a rewrite rule like that could be confused as malware.

--------------- Added 13 Feb 2014 at 15:28 ---------------

I see the intersting thing now I think you were getting at

From the link you supplied

We are reporting that site because something is redirecting your traffic to the domain when its visited. Has nothing to do with the htaccess file rule you referenced. Something is hijacking your traffic.
Cheers
Tony w/ Sucuri

and another reply to that

0 down vote
This is definitely a cheap trick by Sucuri to create fake insecurity threat and drum-up business. This is exactly the case and error with same http://mydomain.com/404testpage4525d2fdc security warning for a page which does not exist on my website. Also, what makes things more suspicious is the fact that unlike EVERY other such service they do not have a "False Alarm" reporting form/webpage.