Hackers Rig Google to Deliver Malware

Bad guys loaded up more than 40,000 Web pages with malicious software and thousands of common search terms. They then employed an automated network of malware-infected computers--known as a botnet--to link to those sites in blog-comment spam and other places. The mentions elevated the position of the poisoned sites in search results, often to the first page.

The malicious sites had no useful information. Instead, a simple click on a link to such a site in the search results was enough to launch attacks against your PC. If the attack found any of a number of vulnerabilities in a range of programs, it would load.

http://news.yahoo.com/s/pcworld/20080128/tc_pcworld/141796