Book Image

Learn Kubernetes Security

By : Kaizhe Huang, Pranjal Jumde
5 (1)
Book Image

Learn Kubernetes Security

5 (1)
By: Kaizhe Huang, Pranjal Jumde

Overview of this book

Kubernetes is an open source orchestration platform for managing containerized applications. Despite widespread adoption of the technology, DevOps engineers might be unaware of the pitfalls of containerized environments. With this comprehensive book, you'll learn how to use the different security integrations available on the Kubernetes platform to safeguard your deployments in a variety of scenarios. Learn Kubernetes Security starts by taking you through the Kubernetes architecture and the networking model. You'll then learn about the Kubernetes threat model and get to grips with securing clusters. Throughout the book, you'll cover various security aspects such as authentication, authorization, image scanning, and resource monitoring. As you advance, you'll learn about securing cluster components (the kube-apiserver, CoreDNS, and kubelet) and pods (hardening image, security context, and PodSecurityPolicy). With the help of hands-on examples, you'll also learn how to use open source tools such as Anchore, Prometheus, OPA, and Falco to protect your deployments. By the end of this Kubernetes book, you'll have gained a solid understanding of container security and be able to protect your clusters from cyberattacks and mitigate cybersecurity threats.
Table of Contents (19 chapters)
Section 1: Introduction to Kubernetes
Section 2: Securing Kubernetes Deployments and Clusters
Section 3: Learning from Mistakes and Pitfalls

Detecting crypto-mining attacks

In this section, we are going to talk about detecting crypto-mining activities in the Kubernetes cluster with some of the open source tools we introduced in earlier chapters. We detect crypto-mining activities based on the known patterns of crypto-mining: high CPU usage, communicating to mining pools, the executed command line of miner, and the binary signature. Note that each individual measure has its own limitations. Combining them improves the efficiency of detection for sure. However, there are still some advanced crypto-mining attacks, such as the one that attacked Tesla. It's necessary for you to work with your security team to apply a comprehensive detection strategy for your Kubernetes cluster to cover all kinds of intrusion.

In order to demonstrate each tool to detect crypto-mining, we simulate a victim nginx pod:

$ kubectl get pods -n insecure-nginx
NAME            &...