How Come We Cant Get The Core GUI From RoBlox???

I Am Trying To Make An Anti Exploit Script. I Heard That Exploiters Can Inject Stuff In There. So I Tried To Make A Script That Prevents That.

Game:service'CoreGui'.childAdded:connect(function(child)
	Game:service'Players'.localPlayer:Kick('Stop Exploiting You Retard')
end)

But It Says That Class Security Check And That I Am Lacking Permissions. So How Do I Get Them? Do I Have To Ask RoBlox To Give Me It? Through A Email? How Do I Do It? I Can Access Other Services. And Why Doesn't RoBlox Allow Us To Get Core GUI? And Why Are Exploits Able To Put Stuff InSide Of Core GUI But We Cant? I Am Very Angry That RoBlox Caters To Exploiters But Not Us.

You shouldn't even be trying to do anything in the CoreGui. If they insert anything over there, let them do it. There are other things like movespeed, jumppower, noclip, etc which are much more important anti exploit subjects to handle.

Additionally it never makes any sense to perform any kind of anti-exploit check on the client, this is because the exploiter can just circumvent all of your checks.