write a javascript that will run everytime any page is loaded (embed it into the template) then run this through a little system that will convert every character to it's html hex equivalent. Then place the code with the html hex equivalents on the page.
Another idea is to embed the checking into a couple of legitimate functions that run on every page. For example, 1 functions grabs the domain name, 1 function compares the domain name to the valid domain name and stores the result, 1 function emails you if they don't match. Then you take these three parts and embed them into three legitimate functions that run as an integral part of the site.
