Yes, it more highlights that the simple presence of a valid certificate does NOT guarantee that you are connecting to the service that you think you are.
EV certs would be harder to compromise, but likely not too difficult for a sophisticated attacker. And who really notices if a site that had an EV cert suddenly doesn't? I might for my bank, but likely would not for a software product website.
Re:Fox-IT hit by cyber attack
by da_chicken on Friday December 15, 2017 @09:13AM
(#15931893)
> he could pass a CA's domain validation
What! That's impossible! /s
I'm not entirely sure, but I think HPKP could have prevented this for returning customers, because Fox-IT would have been able to pin the key of their own certificate. Then the new certificate used by the attacker would have been rejected by the customer's browser.