Jesper Johansson distilled down to several hypotheses and decided to test them: 64-bit Vista had fewer security vulnerabilities than 32-bit. Windows Vista’s security vulnerabilities were more severe than those from Windows XP. Users who only use Firefox were subject to fewer vulnerabilities that those who use IE are subject to less vulnerabilities. Jesper’s findings, Do Vista Users Need Fewer Security Patches than XP Users? download his spreadsheet to see if he affirms the 6 hypotheses or find them to be false.”]
Source: https://www.csoonline.com/article/2136945/jesper-johannsen-does-some-windows-vista-analysis.html