Googles Safe Browsing initiative has been protecting users from web pages that install malware for over five years. The report analyzed four years of data to uncover trends in malware distribution on the web. Social engineering has increased in frequency significantly and is still rising. Sites that rely on social engineering comprise only 2% of all sites that distribute malware. More malicious sites engage in IP cloaking as a technique to evade detection, Google’s report says. The analysis covers approximately 160 million web pages hosted on approximately 8 million sites.”]
Source: https://security.googleblog.com/2011/08/four-years-of-web-malware.html