Anti-leech is an IIS plug-in designed to safeguard your website by preventing unauthorized linking to resources on your server, ensuring your web traffic is not stolen. It is particularly suitable for those with collections of images, videos, software, document archives and Flash games.

This IIS plug-in is the perfect way to protect your website from bandwidth bandits and hotlinks. With UISD, you can stop and prevent hotlink bandwidth theft, ensuring that your site's traffic stays on your server. Whether you have an image collection, video, software or document archives, Flash games or any other downloadable resource, UISD is the right product for you.
Installing UISD won't change the way your site works. All search engines and backward links will still be valid, and users' favorites will remain working. But, if someone tries to embed your stuff directly on their site, they will only see an error message or your site's logo. This means that you can save tons of traffic and, as a result, save money. You can even turn hotlinks into real visitors by redirecting hotlink requests to your site's homepage.
IIS Anti-leech Sniffer Dog is coded in C++. It has extremely high effectiveness, especially in multi-thread IIS5 and IIS6. Though it slightly occupies your CPU, it's a small price to pay for such an effective solution. Our product performs much better than some competitors which use C# ASP script, as we design it for high-load capability from the very beginning. In other words, IIS Anti-leech Sniffer Dog is really reliable!
Version 5.03: http://Anti-leech.versalsoft.com