: It prevents other sites from "hotlinking" directly to the download links without providing credit to the original uploader. Common Passwords for s1.bitdl.ir
Below is a guide you can use for a blog post or as a quick reference to unlock these files. The Most Common Passwords s1.bitdl.ir password
I should also consider if there's any public data on data breaches involving s1.bitdl.ir. If I can find any, mention checking haveibeenpwned.com, but if not, just state that there's no public info. : It prevents other sites from "hotlinking" directly