Only download from reputable sites that have community moderation and "trusted" uploader badges.
A .torrent file is a small metadata file that tells a BitTorrent client (like qBittorrent or Transmission ) how to find and download larger files from other users. When you see a string like "C09D763EE720339F," it is often: Download File C09D763EE720339F.torrent
Before hitting "start" in your torrent client, look at the list of files inside the torrent. If you expect a video but see an .exe or a .zip with a password, delete it immediately . Only download from reputable sites that have community