I am considering releasing a Unity Asset, perhaps with a Pro version that costs $5 or so, but I don't see how I can protect it from being given away on 'backstreet' sites. If I saw a game using it without a license, what could I do? Also, do either of the popular Obfuscator Packages in the asset store work? Not quite on-topic for here I know. Not being able to hide my code is also a worry.