The average enterprise was targeted by 133 Web-based malware attacks a month during July, August and September. The majority of the attacks it identified 65% were blocked in some fashion for example, using Cisco s ScanSafe Web filtering technology. Stuxnet-related issues accounted for around 5% of the issues handled by Cisco ROS during the summer months. Spoofed LinkedIn mail comprised 31% of all spam intercepted by Cisco at the height of attacks in late September and early October.
Source: https://threatpost.com/cisco-web-attacks-spam-dog-enterprises-q3-111710/74681/