Google just announced that they are now using its own data to detect viruses and will as of today be using Google Search results pages to warn users if their computers are infected with a specific form of malware.
"Recently, we found some unusual search traffic while performing routine maintenance on one of its data centers. After collaborating with security engineers at several companies that were sending this modified traffic, we determined that the computers exhibiting this behavior were infected with a particular strain of malicious software, or "malware"," revealed Google.
"As a result of this discovery, today some people will see a prominent notification at the top of their Google web search results," Google informed.
"This particular malware causes infected computers to send traffic to Google through a small number of intermediary servers called "proxies." We hope that by taking steps to notify users whose traffic is coming through these proxies, we can help them update their antivirus software and remove the infections," Google added.
Matt Cutts tweeted out that it only affects Windows computers and hijacks Google results. "That's how we learned about it," Cutts says about the "results hacking" thing, without offering many more details.
Google said "In case our notice doesn't reach everyone directly, you can run a system scan on your computer yourself by following the steps in Help Center article."
[Source: Google blog]