[Logic_]

PHP код:

/*use a timer*/
foreach(new i : Player)
{
    if(/*checking what kind of hacks being used*/)
    {
        if(/*checking player is admin*/ > 0)
        {
            SendClientMessage(playerid, color, "message of hack");
        }
    }
} 


Something like this can work, this is just an example, you need to script your systems yourself.