UISD is an IIS plug-in that safeguards your website from traffic theft by prohibiting direct links to resources on your server. It is suitable for image collections, videos, software or document archives, and Flash games.

UISD technology is server and file type independent, making it transparent to your site's applications. The software is easy to set up and configure with an automatic installation procedure and a simple program GUI. UISD offers two different protection methods: from simplest installation to the unbreakable protection level. The software does not rely on cookies or JavaScripts, providing more reliable protection. You can set different preferences for different domains or IPs, enabling hotlink protection for images, software, music, movies, stream media files, and more. In addition, UISD has the ability to redirect leechers to desired URLs automatically.
You can set trust hosts to link your content, and UISD was developed with C++ language, ensuring high process efficiency. When a user requests non-existent files, UISD can automatically redirect to specified URLs, and you can specify different URLs for different extensions. Additionally, you can disable UISD for a domain momentarily. After use, UISD has an obvious effect on your domain, increasing the access count whilst keeping bandwidth in normal status.
You don't need to modify any programs, and you don't have to worry about the real URL of your files being exposed. UISD is an affordable solution that supports multiple languages, including English and Chinese. It can record leech logs and access logs. Finally, UISD provides a free 14-day trial period for users to test out the software before purchasing.
Version 3.16: N/A
Version 3.15: N/A
Version 3.12: http://uisd.versalsoft.com
Version 3.10: N/A
Version 3.8: N/A
Version 3.5: N/A
Version 3.3: N/A
Version 3.2: http://uisd.versalsoft.com
Version 3.1: http://uisd.versalsoft.com