The Blog (en.tacticalcode.de) is available via HTTPS, however, this certificate isn’t signed by any CA. It’s self-signed by my host for the server srv21.sysproserver.de, so every good browser will show a warning when attempting to connect over SSL:
If you decide to trust GeoTrust, Inc. as well as my provider (sysprovide.de), you can add an exception for this certificate on your browser, so the warning won’t pop up every time you visit via HTTPS.
Generally, you shouldn’t blindly trust all certificates that cause a warning in your browser.
When using hyperlinks, please watch out whether they reference an HTTPS-Site or normal HTTP!
Any questions left? Feel free to contact me.