Revoking Trust in One CNNIC Intermediate Certificate(blog.mozilla.org)
blog.mozilla.org
Revoking Trust in One CNNIC Intermediate Certificate
https://blog.mozilla.org/security/2015/03/23/revoking-trust-in-one-cnnic-intermediate-certificate/
https://blog.mozilla.org/security/2015/03/23/revoking-trust-in-one-cnnic-intermediate-certificate/
In China (mainland), the genuine certificate of google.com/gmail could not be verified from time to time (possibly due to inaccessibility to intermediate CA that signed these certs), adding up to the speculation that a mass surveillance using Man in The Middle attack is drawing near.