As @kevin4fm pointed out, the staff always sees who the person actually is, regardless of their security settings.

If the report button is available, use that. If it's not, you can use the helpdesk and provide a link to the torrent.

You simply report the comment. Moderators will work out who left it and, if they're a repeat offender, what level of penalty is appropriate.

@john32123666 said:
Now we don't know who the users is either and how to stop them or report them, Anonymous who ???

Sorry I must have misread the part where you ask how to report, totally my bad.

you haven't undrstand what I posted ...