Users trying Monday to access Empornium.us, considered the world's largest adult BitTorrent tracker, instead were met with a page warning surfers that visiting the site could be harmful to their computer.

According to TorrentFreak.com, users of the site were being exposed to four Trojan horses and three exploits from malware apparently from outside sources.

Firefox3 users also were blocked from the site, with a page reading "Reported Attack Site!"

Torrent Freak reports Empornium.us is considered the world's largest adult-material tracker, and at one point had more than 1 million members, making it one of the world's biggest tracker of any material.