gHacks posted a guide about protecting a Windows XP system after April 2014

You know by now -- probably - that Microsoft will retire the Windows XP operating system for good come April 2014. It is also likely that you won't notice lots of changes after that day, at least not initially.

While new security patches won't be released for Windows XP, everything else will work just like it did before.

The core issue here is that new vulnerabilities that are detected after end of support won't get fixed anymore, leaving the system vulnerable to these kind of attacks.

  How to protect your Windows XP system after April 2014