No one will deny it, not even Google. Viruses, malware, spyware and so on, is currently a major issue on the Internet. Google and other search engines has stepped up how they detect and block malware from showing up in their index. But now, in 2010, expect it to get a lot worse. Expect those who produce malware to not look to just infect computers, but to look to get around Google's malware detection techniques and infect even more computers.
A WebmasterWorld thread has reports of more and more malware getting through Google's filters. For example, we reported a major malware breach using the keyword phrase blackberry news via CNN as some sort of 302 redirect malware hack. Google finally removed it, but I wonder how many computers were infected by that?
The WebmasterWorld thread is discussing several people's experiences with recent malware infections they or friends received via a Google search.
I know Google is doing what they can to prevent this, but it is hard to keep up. So just be wary of what you click on via email, Google, Facebook and so on. The best prevention is being smart.
Forum discussion at WebmasterWorld.