An anonymous reader recommends a Computerworld article on a new report from Australian security vendor PC Tools. The company released figures on malware detection by its ThreatFire product, and in its user base 27% of Vista machines were compromised
by at least one instance of malware. From the article: "In total, Vista suffered 121,380 instances of malware from its 190,000 user base, a rate of malware detection per system [that] is proportionally lower than that of XP, which saw 1,319,144 malware infections from a user base of 1,297,828 machines, but it indicates a problem that is worse than Microsoft has been admitting to."
Microsoft hasn't responded yet to this report.