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10 steps to automating security in Kubernetes pipelines

Kubernetes pipelines face an ever-increasing range of threats that demand more integrated and automated security across the application lifecycle. Making things more complex, critical vulnerabilities can make their way into any stage of the pipeline: from build to registry to test-and-staging to (especially damaging) production environments.

One of the biggest roadblocks to effective Kubernetes pipeline security has been investing the time to get it right. The purpose of using containers is increasing the velocity of release cycles, enabling more up-to-date code and better features with better resource stabilization. Any manual efforts to inject security into this pipeline risk slowing that speed and preventing the benefits of a container strategy from being fully realized. 

DevOps teams simply can’t afford to slow down the pipeline. This is why automation is not just crucial, but also the most realistic way to ensure container security.

Kubernetes pipeline overview

Taking a step back, this is a simplified view of the Kubernetes pipeline, and some of the top threats at each stage:

kubernetes security 01 NeuVector

New vulnerabilities can be introduced as early as the build phase. (Open source tools, in many cases, have been the culprit for adding previously-unknown attack surfaces.) In a registry, even when you’ve successfully removed vulnerabilities in the build phase and stored a clean image, a critical vulnerability might be discovered later that is affecting that image. The same thing can (and regularly does) happen with containers running in production.

In the production environment, containers, critical tools, or Kubernetes itself could be attacked, such as we all saw in last year’s critical API server vulnerability. All of this infrastructure presents an attack perimeter that needs to be monitored and protected automatically. And, even when you do the best possible job of removing vulnerabilities, there’s still the danger of zero-day attacks, unknown vulnerabilities, or even insider attacks.

Copyright © 2020 IDG Communications, Inc.

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