Techcrunch is getting Domain Name Mismatch error, while accessing over HTTPS. As Wordpress is sharing SSL certificate with techcrunch but the certificate is only valid for *.wordpress.com

Huge name like Techcrunch should get their own certificate to protect traffic. Earlier, if certificate has been issued on www.domain.com and if someone try to access https://domain.com (without "www"), in this case approacher may get this error. But now major CAs are offering both www and non-www protection with single certificate.

In case of CA root/chain/intermediate certificate has not been installed, approacher may get such error. Website owner should install certificate properly to resolve this error.