Not sure why this is getting downvoted, I think this is a reasonable rule for a Dom to impose - Primarily after or alongside when the developers introduce more interactions relating to cheating & getting caught in general.
Maybe depending on the Doms preferences, they could even also have a rule where you are free use.
Of course it matters very much *how* the rules are implemented in a game-mechanics sense; and in either case for relationship/freedom-defining rules like these, I'd want to first have an option as a Sub where you can negotiate or outright refuse rules which are imposed on you.