LinkedIn attack comprised over 31% of all spam

Enterprise users experienced an average of 133 Web malware encounters per month, peaking at over 140 during the month of August, according to Cisco.

Approximately 10% of Web malware was encountered via search engine traffic and/or services. During 3Q10, 7% of all Web malware encounters resulted from Google referrers, followed by Yahoo at 2%.

More: http://www.net-security.org/malware_news.php?id=1532