> 
> The problem is that any CA can issue a certificate for a given domain name 
> and all browsers will trust it. CT allows Paypal (just an example) to detect 
> that some unexpected CA issued a cert for one of their domains. If CAA is 
> used by the CA being hacked, their system should refuse to issue the cert to 
> Paypal's domain. DANE or cert

When a CA is hacked I think we can safely assume that the 'system' can be 
tricked into doing whatever the attacker wants it to do. Including overriding 
CAA policy.

          Leif
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