Hackers Timthumb Their Noses at Vulnerability to Compromise 1.2 Million Sites

This just goes to show how many different areas are touched by information security.  Unfortunately, there are too many people who never install security patches on their WordPress and other content mangement system (CMS) sites.  The idea that a hacker can use this vulnerability to install a malicious file on someone's site just goes to prove that you should never trust user input from the web.  Everything should be checked, double-checked, and then quarantined just in case (okay, that may be a bit extreme).