Anti-leech files, Stop and prevent hotlink bandwidth theft, hotlinking, file leeching, bandwidth bandits, hot links, bandwidth leeching, hotlinks, external linking, remote linking, deep linking and direct linking are all words and phrases used to describe a single problem faced by many webmasters. IIS Anti-leech Sniffer Dog is an IIS plug-in that will protect your web site from bad people stealing your traffic by directly linking to the resouce on your server. If you have an image collection, video, software or document archives, Flash games or any other downloadable resouce UISD is a right product for you. After installing UISD in your site will continue working as before, all search engines and backward links will still be valid, all user's 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. You can save tons of traffic and thus the money. You can even turn these hotlinks into real visitors by redirecting hotlink request 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. It slightly occupies your CPU. Differs from some uses C# ASP script, our product performs much better for we design its high load capability at the very beginning. It's really reliable!