I know there have been several independent "signing services" driven by these type of enterprise certs, and usually when Apple finds out that they've been used

I know there have been several independent "signing services" driven by these type of enterprise certs, and usually when Apple finds out that they've been used like this, they'll revoke them. The only real time I've personally ran into this is when I was away from my computer for an extended period of time and needed to reinstall the on-device jailbreak app (which would have been unc0ver).