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In its seventh year in issuing the Top 20 Internet Security Risks, this year’s SANS list reveals a continued shift from server-side to client-side vulnerabilities, as illustrated by numerous zero-day threats in popular end user applications such as Internet Explorer, Windows Media Player and Adobe. Another rising trend in 2007 is an increase in vulnerabilities relating to Web applications such as wikis, portals or those that provide access to backend databases and banking applications. This is due in part to the fact that developing Web applications is an intricate process, and the combined complexity and flexibility of Web development tools, such as Java, .Net, Perl, PHP, Ruby, and others, make it easy for development mistakes to become exploitable security holes. Attackers have increasingly used techniques such as cross-site scripting to exploit not only the information stored within the Web application itself, but as a launch pad to internal network segments and servers, and even end user systems.

Sarwate, along with forty-three security experts from government, industry and academia in a half dozen countries cooperated to produce the consensus. Their names are listed in the Top 20 which is available online at www.sans.org/top20.

Qualys’ on demand model provides customers with immediate vulnerability updates, such as the Top 20 listing, without the need for installing software or building out additional infrastructure. In addition to the free scan, the QualysGuard® service detects new exposures in the SANS Top 20.

Qualys’ free scan for the 2007 SANS Top 20 is available at:
https://sans20.qualys.com.