Antivirus defense is no longer a matter of installing an application. The most recent malware attacks have proven that a more comprehensive defensive approach is required. This chapter has focused on how you can apply the defense-in-depth security model to form the basis of a defense-in-depth approach to create an effective antivirus solution for your organization. It is important to understand that malware writers are continually updating their methods to attack new IT technologies that your organization may be using, and that antivirus technologies are constantly evolving to mitigate these new threats.

The antivirus defense-in-depth approach should help ensure that your IT infrastructure will address all possible malware attack vectors. Using this layered approach makes it easier to recognize any weak points in the entire system, from the perimeter network to the individuals working at their computers throughout your environment. Failure to address any of the layers described in the antivirus defense-in-depth approach could leave your systems open to attack.

You should constantly review your antivirus solution so that you can update it whenever needed. All aspects of antivirus protection are important, from simple automated virus signature downloads to complete changes in operational policy.

Similarly, because the information provided in this guide is subject to updates, it is important to continually monitor the Microsoft Security Antivirus Information Web site on Microsoft.com at http://www.microsoft.com/security/antivirus/ to receive the latest antivirus information and guidance.

Microsoft recognizes how disruptive and costly malware can be, and has invested a great deal of effort into making it more difficult for those who create and distribute malware. Microsoft is also working to make it easier for network designers, IT professionals, and end users to configure systems to meet their security requirements with minimal impact to their business operations.

Although it may not be possible to completely eradicate malicious code, focusing consistent attention on the areas highlighted in this antivirus defense-in-depth approach will help minimize the effect a malware attack can have on your organization's business operations.

For more in-depth information, visit http://www.microsoft.com/technet/security/guidance/avdind_3.mspx#XSLTsection129121120120

Courtesy of Microsoft Corporation, All rights reserved.

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