by Lionel Garacotche, Technical Office Leader and Ahmed Aboukora, Cybersecurity Architect @ Airbus Protect on 2022-11-24

Container security: a beginner’s guide

What is Containerisation?
Containerisation – the practice of packaging software code and dependencies into a single ‘container’– has become the backbone of modern, cloud-native app development. Used in conjunction with other technologies like microservices, serverless architectures and DevOps, containerisation enables teams to quickly build, deploy, reconfigure and scale applications to run in any computing environment.  

Containerisation is often used as an alternative to virtualisation – though containers can only host a single application, while virtual machines can host multiple apps. The appeal of containerisation hinges on the fact that, unlike a virtual machine, containers don’t need to include a guest OS in every instance. Instead, they can simply use the features and resources of the host OS. 

In today’s fast-moving development environment, organisations should be prioritising container security throughout the development cycle, rather than treating it as an afterthought. With this guiding principle in mind, let’s take a whistlestop tour through container security best practices.

A quick note – in the interests of clarity, we’ll assume that you’re working with the Docker platform, as opposed to other solutions like containerd or Podman.

Securing your image
As you know, the basis of each container is a static file with executable code known as [...]

Container security - a guide by Airbus Protect
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