Webserver
Delete a HSTS Key Pin in Chrome
Here are the steps to take on Chrome when a HSTS key pin is set on a website, but incorrect. Go to the net-internals settings to search for the domain.
Protect Linux systems against SSLv3 Poodle vulnerability
The Poodle vulnerability was discovered in October 2014, putting all systems using SSL 3.0 at risk. Here is what to do to protect against it.