i know which little sod did it but unfortunatly i cannot prove it

anyone know of a place where i can get an antitheft one or an anti theft beesting ariel, im not really bothered which one, just as long as its anti-theft, coz i know what the little bleeder is like and hes probably gonna attempt to take it off again, luckily he didnt snap the last one, he was kind enough to unscrew it