The recent Comodo hack seems to be a lot more serious than initially thought with the latest information that the hacker was actually able to wipe a hard drive on the Comodo server. To quote the gloating hacker:
Some stupids in internet still cannot understand I’m behind the attack on SSL, talks about their small understandings about my hack and makes me nervous. I uploaded JUST 1 table of their ENTIRE database which I own. Also ask Comodo about my hack, ask them what I did to them. Let me tell you what I did: I was logged in into their server via RDP (remote desktop), they detected me and via hardware firewall, they added allowed IP for RDP, so I was no longer able to login via RDP.