Windows Vista security is supposed to be better, but Windows XP SP2 security is better, author says. Windows Vista had 30% fewer Security Bulletins than Windows XP and 20% fewer vulnerabilities than XP. 26 vulnerabilities on Windows Vista are less severe for any users running as standard user, he says. The paper is a short paper analyzing vulnerability data for Microsoft Windows Vista and Microsoft Windows XP for calendar year 2007 and a brief analysis to see if any benefit is apparent for users of one OS over the other.”]