An anonymous reader writes "As most of us working in IT may know, Microsoft will stop supporting Windows XP on April 8th, 2014. Although this fact has been known for quite some time, XP is still relatively popular in companies and also enjoys noticeable marketshare for home users. Even ATMs are running XP and will continue to do so for some time. A lot of companies/users don't want to change because they see no additional benefit to do a costly upgrade, no reason to change a running system, and they may in some cases be right with their assumptions. So what is the best way to secure this remaining Windows XP systems? Installing the latest security patches, checking firewall status and user permissions etc. should be fairly obvious, as Microsoft Security Essentials may also not receive updates anymore, changing antivirus programs seems a sensible thing to do."