Isnt the game constantly checking in? We were told internet is required to play which means there is communication between the host and users platform which would discredit any claims of modding. Unless you were to decode the game files and play on your own but id imagine that would require a pc version of the game which hasnt been released yet. Everytime you boot up the game you have to connect to Bungies server and while this could just be to avoid people rolling back saves its also a form of drm, if the games getting info from the servers it stands to reason the servers also checking to see if that copy of the games legit.