But no matter if the user is running XP or Vista, Microsoft Corp. has said that the most current service pack which is available always is least susceptible to the security attacks. It is hardly one surprise that the service packs which are included in the previously released updates of security, along with the changes for the default settings and some added security features. However, consistently Microsoft Vista SP releases the beat those for XP in all of the service pack configurations.

Infection rate was 61.9 percent less for Windows Vista SP1 as compared to Windows XP SP3 in the first half of the year as according to one report. Also, by comparing the release to manufacturer versions, infection rate of Vista was staggering 85.3 percent less than that of XP as added by the software giant.

On downside of the story, the web browsers continue to represent the hot spots for the vulnerability of Microsoft. The report also said that Microsoft software has accounted for six of top 10 browsers based vulnerabilities, which attacked the PCs running Windows XP but only one for Vista machines out of the top 10 browsers based vulnerabilities.