[deleted] CAs can still get hacked themselves or their own malicious employees could help the attacker [...]
If a CA is compromised and then an ISP is compromised (to do DNS spoofing or traffic re-routing) and certificate pinning isn't happening...
Again, this isn't something an ISP can just decide to do.
forumuser https certificate spoofing for man in the middle attacks happen. There are many examples [...]
What's your "favorite" example?