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Related to the second point, this is a major challenge at colleges and universities with wireless and WiFi networks where hundreds of types of laptops and mobile devices are used (Higby, Bailey, 2004). The sheer variety of laptops, PCs and mobile devices make patch management in larger colleges and universities a continual and costly challenge.
Cost Effective Measures for Patch Management
Spanning the spectrum from the manual to the fully automated, there are cost effective measures that organizations can take to attain a high level of effectiveness with patch management. Beginning with the most manually based approach of defining blacklists of systems that have been compromised on a network through server-based analysis (Higby, Bailey, 2004) to the use of semi-automated and automated patch management (Gerace, Cavusoglu, 2009) there is a range of cost-effect measures for managing patch distribution and validation. Blacklisting specific systems has proven to be resource intensive in academic institutions that have a very wide variety of laptops, WiFi-enabled devices, often with mixed results (Gerace, Mouton, 2004). Studies indicate that automated patch management using applications including BigFix Enterprise Suite, HFNetChk, and PatchLink Update are effective in ensuring compliance of up to 31% of all systems in a network (Brandman, 2005). Microsoft's Automatic Update (Gerace, Mouton, 2004) is a third alternative in networks that are...
Blacklisting through server-based authentication (Higby, Bailey, 2004) is not scalable over time and does not have a prescriptive approach to solving the problems of security; the approaches are only restrictive. The most cost-effective strategies for patch management combine change management programs and initiatives in conjunction with automated patch management that can scale across a wide variety of operating systems and platforms.
References
George Brandman. 2005. Patching the Enterprise. Queue 3, 2 (March 2005), 32-39.
Tom Gerace and Jean Mouton. 2004. The challenges and successes of implementing an enterprise patch management solution. In Proceedings of the 32nd annual ACM SIGUCCS conference on User services (SIGUCCS '04). ACM, New York, NY, USA, 30-33.
Thomas Gerace and Huseyin Cavusoglu. 2009. The critical elements of the patch management process. Commun. ACM 52, 8 (August 2009), 117-121.
Charles Higby and Michael Bailey. 2004. Wireless security patch management system. In Proceedings of the 5th conference on Information technology education (CITC5 '04). ACM, New York, NY, USA, 165-168.
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