Ok, I am a member at TorrentLeech!
Actually, I was try not to get caught from my ISP, or any of those FBI guys
I know some measures to avoid getting caught downloading copyrighted files from torrents, like,
Using a VPN,
Seedbox,
Not uploading (I am not sure about this method)

But all of them have some trouble. like, Private trackers won't allow to change the IP address which is what VPN does.
Seedbox are expensive.
Not uploading may make us safer but not from the private trackers, as they may ban us.

So What is the best way to download a private torrent file???