Hey so i was thinking that staff of Nulled or certain individuals that are hand picked can approve files.
Just like unknowncheats.
Now if the user edits the link to the file, the approval is automatically removed / put on hold.
The users cannot ask for approval or they'll get a warning. If it gets approved, it gets approved. Simple as.
This is a sorta exploit free method of showing the users if the download is safe.
You could probably even make some sort of badge for this