This could be very dangerous in a narrow spear-phishing attack against people with important credentials, but it's unlikely to ever be a widespread issue for a

This could be very dangerous in a narrow spear-phishing attack against people with important credentials, but it's unlikely to ever be a widespread issue for a couple reasons: 1) Apple puts limits on the number of enterprise certificate authorizations (used to be 600, but I believe it's now 1,000) 2) Apple can disable an enterprise certificate at any time. It's just another good reason to safeguard your company's certificates.