Obviously in this case people trusted Symantec, till they did not. In the mean time thousands of people probably got their computers compromised, and they are s

Obviously in this case people trusted Symantec, till they did not. In the mean time thousands of people probably got their computers compromised, and they are still compromised right now. When Google (an opponent) dared to speak out against Symantec, it took years, while people's security was still being compromised, before Microsoft removed the certificate. After removing the certificate, you'd think people are safe, but no Microsoft decided to silently reactivate it for an obscure reason for some time. Now my question is do you use MS Windows ? Do you feel safe, if microsoft can activate a compromised certificate at any time ? What certificate transparency are you talking about, if you have to trust handful of monopolistic companies ? Hierarchical trust is as good as it's trusted authorities. What would happen in the future if you find out that Let's encrypt certificates were compromised like Symantec ?