Downloading games through unofficial torrents carries several risks:
: .torrent files are small (usually a few KB) and contain only "instructions" for your software. DOWNLOAD FILE – Portal.torrent
: Your IP address is visible to everyone else in the "swarm" (the group of people downloading/uploading the file). DOWNLOAD FILE – Portal.torrent
Using info hash to download files - Troubleshooting - Forums DOWNLOAD FILE – Portal.torrent