Senior Microsoft executive warns users of Windows XP to get a move on and upgrade to shinier versions of Windows. Microsoft will be forced to pass on details of likely XP vulnerabilities to potential attackers in April 2014. Attackers will have the advantage over defenders who choose to run Windows XP because attackers will likely have more information about vulnerabilities in Windows XP than defenders. But any problems that are found for more recent versions may well be backwards-compatible with XP. The financial impact of mass upgrading is likely to play a major factor here, and not just for sentimental reasons.”]