by Neil MacDonald | June 16, 2011 | Comments Off on Improving Security by Killing Server and Desktop Workloads
It sounds counterintuitive, but today’s advanced threat environment requires new approaches to the ongoing security and management of server and desktop workloads.
The trouble with Advanced Persistent Threats is that, by definition, they have evaded our traditional network and endpoint security controls and now reside undetected in our IT Systems. How many advanced intrusions will it take (such as RSA, Lockheed, Google, IMF, …) before you reach the same conclusion that many of us already have:
Your systems have been compromised. You just don’t know it (yet).
To counter APTs, new approaches are needed. Using virtualization of OS and applications as well as taking advantage of resilient web- and cloud-oriented scale out application architectures, we can take a new approach: periodically rebuild and reprovision server and desktop workloads from a high-assurance library of base image files. In short, periodically killing live workloads and restoring them to a high assurance state – even if they appear to be healthy. I call this “systematic workload reprovisioning” – SWR for short.
A SWR strategy reduces the dwell time of an intruder and will appeal to information security professionals looking for new ways to counter advanced intrusions for high-risk workloads,
It sounds straightforward, but embracing SWR requires a radical change in mindset for information security professionals: live workloads are no longer fully trusted. Instead of having to trust thousands of live workloads, our trust model is collapsed to the high-assurance libraries and templates that are used to periodically reprovision the workloads. Thus, SWR has several implications on the ongoing management of workloads that must be considered.
I’ve just published two research notes for Gartner clients that detail the SWR strategy. The first explains the concept and the second explores the implications and considerations for information security and operations management where SWR is adopted.
There is no silver bullet in information security, but SWR will become an accepted strategy and part of a defense-in-depth strategy for dealing with APTs in forward-leaning information security organizations over the next five years.
I’ll be talking about SWR next week at Gartner’s Information Security Summit in Washington DC. I hope to see you there.
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Category: beyond-anti-virus next-generation-security-infrastructure virtualization virtualization-security
Tags: adaptive-security-infrastucture apts beyond-anti-virus defense-in-depth next-generation-security-infrastructure security-summit-na virtualization virtualization-security
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