While the new OS is disliked by many users, it certainly has had -so far- a good reputation concerning security.
But things might change soon: PC Tools has shown that one out of three Vista machine has been infected by at least a malware.
58,000 PCs running Vista were compromised by at least one piece of malware over the six months to May 2008, equivalent to 27 percent of all Vista machines probed.
It's important to notice that Windows XP is doing much worse and that there are very few reasons to stick with the old OS.
Although Vista has resisted many attacks over the months it looks like malware writers are mastering the OS and are becoming a serious threat for Vista.
Microsoft still has not responded to PC Tools' allegations; in the meantime, have you installed any anti-malware software on your Vista PC?