I observe that Telvue has made a timely upgrade of its SSL certificate from SHA1 to SHA2. They still haven't figured out how to install it though! telvue.com uses an invalid security certificate. The certificate is not trusted because the issuer certificate is unknown. The certificate is only valid for www.telvue.com (Error code: sec_error_unknown_issuer) https://www.telvue.com HINT: tell their server admin that he also has to install the issuer's intermediate certificate if he wants it to work.