SEO Poisoning Attacks
"Online fraudsters have continued to expand their efforts this week to inject
iframeattacks into the optimized search results of major Web sites.
The attack abuses a common practice among Web sites -- caching search queries -- an activity designed to boost their rankings among major search engines, such as Google, according to security researcher Dancho Danchev. The attackers inject common search terms and an
iframescript designed to send victims to other sites hosting malicious code. The search term and
iframeredirect get cached in search engines such as Google."