Rewanth Tammana
Rewanth Tammana's Blog

Rewanth Tammana's Blog

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Decoding EKS Cluster Games CTF

Nov 12, 2023

Learn EKS security with EKS Cluster Games · EKS Cluster Games is a decent cybersecurity CTF that revolves around Kubernetes on AWS & security. You get 5...

Decoding EKS Cluster Games CTF

Securing AWS EKS: Implementing Least-Privilege Access with IRSA

Oct 12, 2023

Ensuring least-privilege access in Kubernetes can be complex at times for security & DevOps teams. This blog aims to cover a variety of scenarios...

Securing AWS EKS: Implementing Least-Privilege Access with IRSA

Kubernetes CRD validation with CEL and kubebuilder marker comments

Oct 12, 2022

Operator require CRDs. In Kubernetes 1.25, CEL validation is in beta! Peek into the process of developing validations for CRDs with & without CEL ·...

Kubernetes CRD validation with CEL and kubebuilder marker comments

Gatekeeper Rules Helm Library

Jun 18, 2022

An armor to the traditional gatekeeper rules library with helm templatization to ease the operational & maintenance overhead · With the deprecation of...

Gatekeeper Rules Helm Library

Hardening Kaniko build process with Linux capabilities

Jan 26, 2022

Build images inside Kubernetes/containers? Wide privileges in default configuration? How to secure Kaniko? Can we take things a notch higher? ·...

Hardening Kaniko build process with Linux capabilities

CoSign with Kubernetes: Ensure integrity of images before deployment

Jan 13, 2022

Notary vs CoSign? Is CoSign a good alternative? Can we automate keys & signature rotation? · During the post-exploitation phase, attackers try to...

CoSign with Kubernetes: Ensure integrity of images before deployment