I downloaded a torrent with Photoshop CS4 and there is absolutely nothing Adobe can realistically do about it.
That's right, Adobe cannot do anything realistic to prevent you personally from using your unlicensed copy of Photoshop. It doesn't change the fact that you must keep this action hidden as long as you lack Adobe's authority to use this software as you wish. You have to live underground as long as you lack this authority; you are not living in freedom.