In today's computing environment, there are many threats to home computers, including those running Microsoft Windows XP Home Edition. These threats are posed by people with many different motivations, including causing mischief and disruption, committing fraud, and performing identity theft. The most common threat against Windows XP Home Edition computers is malware, such as viruses and worms. Users of home computers should ensure that they are secured properly to provide reasonable protection against threats. Accordingly, this document provides guidance to people on improving the security of their own home computers (desktops or laptops) or others' home computers that run Windows XP Home Edition. The recommendations draw on a large body of vendor knowledge and government and security community experience gained over many years of securing personal computers.