Defend the Core: Kubernetes Security at Every Layer

Defend the Core: Kubernetes Security at Every Layer

Containers and container orchestration tools such as Kubernetes are also popular targets for hackers — and if they’re not protected effectively, they can put your whole environment at risk. In this article, we’ll talk about security best practices for every layer of the container stack.

Containers are transforming software development. As the new foundation for CI/CD, containers give you a fast, flexible way to deploy apps, APIs, and microservices with the scalability and performance digital success depends on. But containers and container orchestration tools such as Kubernetes are also popular targets for hackers — and if they’re not protected effectively, they can put your whole environment at risk. In this article, we’ll talk about security best practices for every layer of the container stack.

It’s important to understand the security implications of containers. As an application-layer construct relying on a shared kernel, a container can boot up much faster than a full VM. On the other hand, containers can also be configured much more flexibly than a VM, and can do everything from mounting volumes and directories to disabling security features. In a “container breakout” scenario, when container isolation mechanisms have been bypassed and additional privileges have been obtained on the host, the container can even run as root under the control of a hacker — and then you’re in real trouble.

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