Top 5: The Largest Malware Delivery Networks
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Overview: The Blue Coat 2011 Mid-Year Security Report described the powerful tools that make malware delivery networks successful: dynamic web links that enable cybercrime to change out payload servers and avoid detection. Last year, the malware web delivery infrastructure was hacking into popular and trusted domains where cybercriminals can display lures beyond the reach of reputation filters and web category blocking.
With an eye on acceptable-use policies, the lures often inhabit categories such as Online Storage and Software Downloads. Still, the categories that draw the highest percentage of malware-network entries are search engines (39.2 percent), email (6.9 percent), pornography (6.7 percent), and social networking (5.2 percent). The single most perilous activity for web users was searching for images or pirated media.
Analysis of these findings forced the conclusion reached in the report: single-layer defenses such as firewalls and anti-virus software are incompetent to deal with dynamic, constantly changing threats. The clear solution is an intelligent, real-time cloud-based web defense that is equally dynamic and effective.