the message for the exploit doesn't have to be put in chat
all people have to do is just make the string log into the consoles
they can do this by even naming a tamed dog and just killing it for the death message to appear
and please... fixing exploits with skript is the way to make new exploits...
Server protection on Skript is the badest idea i have ever seen! Check out my Java fix for Spigot/Bungeecord is usable for every version! But nice idea...