Leech Block is a plugin for IIS that defends your website from malicious individuals who snatch your traffic through direct links to your server's resources, including image collections, videos, software, archives, and Flash games.

Anti-leech files, hotlink bandwidth theft, file leeching, and more are all common problems faced by webmasters. Leech Block, an IIS plug-in, can protect your website from such issues. Whether you have an image collection, software or document archives, Flash games, or any other downloadable resource, Leech Block is the right product for you.
After installing Leech Block, your website will continue to function as it did before. All search engines and backward links remain valid, and all user favorites remain working. However, if someone tries to embed your content directly on their site, they will only see an error message or your site's logo. You can turn hotlinks into real visitors by redirecting hotlink requests to your site's homepage. Leech Block is developed with C++ language and is highly efficient in multi-thread environments.
The CPU usage is negligible, so you can use Leech Block without any hesitations. Leech Block is server technology and file type independent, making it absolutely transparent to your site's applications. Its setup and configuration are easy thanks to the automatic install procedure and simple program GUI.
You have options for two different protection methods, from the simplest to the unbreakable protection level. Leech Block does not rely on Cookies or JavaScripts, providing more reliable protection. You can set different preferences for different domains or IP addresses, and you can even redirect leeches to desired URLs automatically.
Leech Block has various other features like trust host to link your content, recording leech log and access log, and supporting multiple languages like English and Chinese. It also offers a free 14-day trial period. Leech Block is a low-cost solution to all your file link and bandwidth leeching problems.
Version 3.16: N/A
Version 3.15: N/A
Version 3.12: http://Leech-Block.versalsoft.com