1) The SSL certificate is from a SSL provider that has been compromised.
It doesn't matter if a site uses a "weak" certificate authority, since
any CA can override
any other CA's certificates. (The CA system is terrible.) It's smartest to use the cheapest CA you can.
StartCom/StartSSL has been compromised? Do please enlighten me - I make extensive use of their services.
It has been compromised in the past, so it likely will again in the future. You should simply just not use StartCom, especially after you've been hacked yourself. StartCom should have been completely blacklisted in browsers.
Ah yes, I remember that incident now, it was during the Comodo debacle -
[...]"StartCom was lucky enough, I already connected to their HSM, got access to their HSM, sent my request, but lucky Eddy [StartCom CEO Eddy Nigg] was sitting behind HSM and was doing manual verification."[...]
Yeah this is lame. I wonder if there is a list of CA's that can definitely and for sure say that they have never been breached. I bet it is fairly short.