Which is why Google knew that someone issues a cert for their website: https://security.googleblog.com/2015/09/improved-digital-certificate-security.html https:

Which is why Google knew that someone issues a cert for their website: https://security.googleblog.com/2015/09/improved-digital-certificate-security.html https://security.googleblog.com/2015/09/improved-digital-cer... Might be part of the reason they are becoming their own CA.