Questions may be protected by users with 15k reputation or by diamond moderators, the only effect of which is that only users with at least 10 reputation may answer it.
Questions may be protected by users with 15k reputation or by diamond moderators, the only effect of which is that only users with at least 10 reputation may answer it.
Questions are typically protected to deter spam or "me too" answers on popular questions.
Questions can also be automatically "protected" when three low-reputation users' answers are deleted.
