Gumblar Malware is back

Gumblar is a botnet that infects Web servers and  infected Web site visitors for the purposes of installing malcode  on Personal Computers (PCs) that redirects end-user Google searches to fraudulent Web sites.

According to the researchers,  hackers are injected malware iframes to site. Iframe, which brings contents from one site to another. These poisoned  iframe leads to Gumblar domain, and that starts to exploit users PC, infection is so hard to get rid of and believed to be highly dangerous.