Kubesploit

cek is a command-line tool for exploring OCI container image filesystems, reading file contents, and inspecting layer mechanics without running containers by connecting to container daemons or pulling from registries. More: https://ku.bz/VWLLdYCbb

Nicholaos Mouzourakis, Staff Product Security Engineer at Gusto, breaks down the common deployment patterns for Open Policy Agent (OPA) in Kubernetes environments. He explains the tradeoffs between individual pods, auto-scaling groups, daemon sets, sidecars, and WASM modules. He outlines critical considerations for selecting the right deployment option: - Latency requirements - Bandwidth constraints - Development overhead - Feature compatibility (noting WASM modules lack full standard library support) - Cloud costs and policy size implications He notes that co-located pods typically achieve a few milliseconds of latency, and suggests WASM modules for those requiring even better performance. Watch the full episode: https://kube.fmhttps://ku.bz/S-2vQ_j-4

This week's 6 best Kubernetes vacancies that focus on security are: DevSecOps Engineer with Anthropic 💰 $40.5M to $48.5M a year 🏠 From the office in San Francisco, CA, USA → https://ku.bz/wrrnmcjDQ DevSecOps Engineer with Tailscale 💰 $15.96M to $19.97M a year 🌎 Fully remote → https://ku.bz/J9Cs7QBBp DevSecOps Engineer with Accenture Federal Services 💰 $11.49M to $15.13M a year 👨‍💻 Remote from → https://ku.bz/bsl59cPMh DevSecOps Engineer with OpenAI 💰 $364.5K to $490K a year 👨‍💻 Remote from the United States of America → https://ku.bz/NXd17JHfV DevSecOps Engineer with Faire 💰 $268K to $368.5K a year 🏠 From the office in San Francisco, CA, USA → https://ku.bz/Lt703grhh 👉 Browse 2459 jobs on Kube Careers https://kube.careers

This article demonstrates how to exploit Kubernetes PKI and kubelet credentials after gaining node access to escalate from pod compromise to full cluster control. More: https://ku.bz/NxVxjKtt0

pwru is an eBPF-based tool for tracing network packets in the Linux kernel with advanced filtering capabilities. It allows fine-grained introspection of kernel state to facilitate debugging network connectivity issues. More: https://ku.bz/Q3X1ngZGC

This week on Learn Kubernetes Weekly 173: 🔥 Kubernetes Egress Control with Squid Proxy 💪 How We Turned a Forced OS Migration into a 30% Infrastructure Reduction ⚡ Auto-scaling and Load-based Scaling in Kubernetes 🎯 Smart Scheduler: Intelligent Pod Placement for Kubernetes Cost Optimization 🤖 Using Claude Code to Pilot Kubernetes on Autodock Read it now: https://kube.today/issues/173 ⭐️ This newsletter is brought to you by Hadron, the new lightweight secure Linux OS from the Kairos team https://ku.bz/mMZytrj-z

Chainloop is an evidence store and policy engine for Software Supply Chain attestations, SBOMs, VEX, SARIF, and QA reports, with contract-based workflows, Rego policy evaluation, and third-party integrations such as Dependency-Track and Guac. More: https://ku.bz/_wQslV4bc

Karpenter can rotate your nodes for three reasons: they're underutilized, they're empty, or the AMI has drifted from what you specified. You can set a disruption budget for each reason to control how many nodes rotate at once. But here's the catch: if you only set budgets for two reasons and skip the third, Karpenter doesn't disable it. It silently applies a default 10% budget to any reason you didn't mention. Adhi Sutandi's team found this the hard way — drift events fired during maintenance windows they thought were locked down. The fix? Set a single budget of one node with no reason qualifier, so it applies to everything. New episode out now: https://ku.bz/XyVfsSQPr

This tutorial teaches how to implement Kubernetes egress control using Squid proxy and NetworkPolicy for visibility and enforcement of outbound traffic without service mesh complexity. More: https://ku.bz/XyLs9nnzh

"The supply chain has become the sharp end of the wedge." Andrew Martin traces the evolution of software supply chain attacks from boot sector viruses to modern npm-borne worms. His team signs everything, generates SBOMs, and verifies Cosign artifacts at admission time into Kubernetes clusters. The prediction for 2026: continuous validation of supply chain security metadata at runtime will become a staple in Kubernetes security tooling this year. Watch the full interview: https://ku.bz/wyMlWGTqf

📕 We published a book on optimising and right-sizing GPUs in Kubernetes. Most GPU clusters show 100% allocation and single-digit actual usage. The book helps you: - Tell whether your GPUs are actually computing or just allocated - Pick the right metrics instead of trusting nvidia-smi - Choose between time-slicing, MIG, and dedicated GPUs based on real data - Stop GPU waste from cascading into CPU and memory waste Download it for free here: ku.bz/KL4jRvsL4 This book was made possible by Kubex.

cert-manager-webhook-pdns is a PowerDNS webhook for cert-manager that enables automated Let's Encrypt certificate issuance using DNS-01 challenges by integrating with PowerDNS API for DNS record management. More: https://ku.bz/x3vxd7ZpJ

"I don't want to see AI agents autonomously control clusters right now." Nick Eberts draws a clear line: AI assistants are valuable for read-only troubleshooting — giving hints, explaining what's wrong. But making changes? That should go through pull requests and human review, especially in a GitOps workflow. He also flags an emerging challenge: securing agent-to-agent communication between MCP servers and clients, and extending Istio authorization policies into the agent layer. The takeaway: AI should assist, not act — until the guardrails catch up. Watch the full interview: https://ku.bz/G1QSYQTn2 This interview is a reaction to Mai Nishitani's episode https://ku.bz/3hWvQjXxp

Shyam Jeedigunta, Principal Engineer at Amazon Web Services (AWS), explains the security challenges and solutions for onboarding Kubernetes nodes from different infrastructure providers. He discusses how to handle identity management, certificate issuance, and trust establishment when nodes come from edge locations, on-premises infrastructure, or other cloud providers rather than the same infrastructure as the control plane. Watch the full interview: https://ku.bz/m89tLbgcq

This tutorial teaches how to implement layered security in Kubernetes using Kyverno for admission control and KubeArmor for runtime protection to enforce guardrails. More: https://ku.bz/SnYRwQhFR

This week's 6 best Kubernetes vacancies that focus on security are: DevSecOps Engineer with Anthropic 💰 $40.5M to $48.5M a year 🏠 From the office in San Francisco, CA, USA → https://ku.bz/wrrnmcjDQ DevSecOps Engineer with Tailscale 💰 $15.95M to $19.97M a year 🌎 Fully remote → https://ku.bz/J9Cs7QBBp DevSecOps Engineer with Accenture Federal Services 💰 $11.49M to $15.13M a year 👨‍💻 Remote from → https://ku.bz/bsl59cPMh DevSecOps Engineer with OpenAI 💰 $364.5K to $490K a year 👨‍💻 Remote from the United States of America → https://ku.bz/NXd17JHfV DevSecOps Engineer with xAI 💰 $180K to $440K a year 👨‍💻 Remote from → https://ku.bz/R4vBYC5mW 👉 Browse 2373 jobs on Kube Careers https://kube.careers

Guardon is a browser extension that catches Kubernetes security misconfigurations during GitHub/GitLab code reviews, providing instant feedback, actionable YAML fixes, a custom rule engine, and Kyverno policy import, with no CI setup required. More: https://ku.bz/1dwsMRc7S

This week on Learn Kubernetes Weekly 172: 🔥 Google Cloud Shell Container Escape 🌐 Azure Kubernetes Service Deep Dive Into Azure CNI Pod Subnet 💭 How I Think About Kubernetes 📦 How We Shrunk a Kubernetes Sidecar from 421MB to 90MB (With No OS Inside) 🎯 Kube Resource Orchestrator: Manage any group of resources as one unit Read it now: https://kube.today/issues/172 ⭐️ This newsletter is brought to you by Kubex — Automated Resource Optimization for Kubernetes, GPUs and AI Workloads https://ku.bz/y98T8bWXP

This article explains how EKS authentication tokens work by pre-signing AWS STS GetCallerIdentity calls, and how you can use this technique to implement IAM-based authentication in your own services. More: https://ku.bz/3WRXBcqzd

Radosław from aleno migrated from ECS to Kubernetes — spot instances broke at 20+ containers, firewalls silently dropped traffic, and the wrong memory metric caused OOM kills. You will learn: - Why ECS spot instances have no built-in fallback mechanism — and how Karpenter's flexible instance selection solves it - How running Flux and Argo CD together gives infra teams git-push workflows while developers get a UI - Why the default Kubernetes memory metric includes evictable caches — and switching to working set fixed OOM errors - How jemalloc cut memory usage by 20% and fixed HPA autoscaling for WebSocket containers Watch (or listen to) it here: https://ku.bz/x6wFMhVsx 🌟 This episode is sponsored by LearnKube — get started on your Kubernetes journey through comprehensive online, in-person, or remote training https://learnkube.com/training With @Birthmarkb