Focus on your site/content and its security (SQL injection, XSS, secure password storage, spam prevention, etc). There have been no remote-root sploits in Linu

Focus on your site/content and its security (SQL injection, XSS, secure password storage, spam prevention, etc). There have been no remote-root sploits in Linux/ssh/apache in a long freaking time. If you get owned, it's probably due to your code, not some widely used open source component.