Seems like a cool idea, but clicking on this link will immediately download a file to your computer: https://bash.rocks/KJKEk3

(it's just a snippet from /dev/urandom, but it looks like it could be any arbitrary file that's within the size limits)

For example, https://bash.rocks/jJg193 shows that it is possible to download any arbitrary data with no prompt (here it's the eicar test file)

EDIT: where can I contact the author? I found a very bad security bug; I can see what commands other users are running