The article states that Comodo revoked the certificates "within hours"
Which presumably means that this particular hack should affect nobody now, but may theoretically have during the period it was undetected.
What bothers me is that Comodo was unaware of the problem and only found out when another agency pointed it out to them.
I suppose there is no 100% security against hackers but one would hope that a site like Comodo should have at least a means to detect when it had been compromised.
The article states that Comodo revoked the certificates "within hours"
Which presumably means that this particular hack should affect nobody now, but may theoretically have during the period it was undetected.
Actually, you need to make sure that your browser actually checks for revoked certificates. If not, your browser will still be tricked.