Google Webmasters Help FAQ

Getting your site hacked is no longer just for the important or high-traffic sites. Whole servers are hacked at once, hacking 1000’s of sites within minutes. Testing 10 consecutive servers of a single hoster, I found one in three to one in four sites were hacked (well over 1000 hacked sites were spotted within minutes). Your site itself does not have to be vulnerable - it’s enough to hack the server.

When Google notices that your site is hacked and when the hacker is using it to trick the user into installing malware, Google will block your site in the search results and include a link to more information.

Searching for the domain name brings us:

When you now click on the title to take you to the site, you are instead treated to an interstitial page with a large (and scary to the average user) warning:

Warning - visiting this web site may harm your computer! You can learn more about harmful web content and how to protect your computer at StopBadware.org.

Suggestions:
* Return to the previous page and pick another result.
* Try another search to find what you’re looking for.

Or you can continue to http://www.domain.com/ at your own risk.

Google will refrain from linking directly - a user would have to copy and paste the link to go to that site. Once StopBadware.org has verified that your site is clean, Google will remove the warning.

References:

• Google: Why do some of my search results say “This site may harm your computer?”
• StopBadware.org