64 articles
How to detect and mask PII before it reaches your LLM and leaks in responses. Covers Microsoft Presidio, regex detection for Indian data (Aadhaar, PAN), token-based masking, and audit logging.
Real attack patterns on LLM applications and how to defend against them. Covers direct prompt injection, indirect injection via RAG documents, context poisoning, and Python code for secure vs vulnerable patterns.
Compare SOPS, Bitnami Sealed Secrets, and External Secrets Operator for GitOps secret management. Understand the tradeoffs and pick the right tool for your team size and stack.
Honest hands-on review of Doppler secrets management — setup experience, Kubernetes operator, comparison with Infisical and HashiCorp Vault, real pain points, pricing, and a verdict.
Honest hands-on review of Infisical, the open-source secrets manager. Covers self-hosted setup, Kubernetes operator, CLI, comparison with Vault and Doppler, and a clear verdict on who should use it.
Use Python, boto3, and the Claude API to automatically audit your AWS environment for security misconfigurations and get AI-powered remediation recommendations.
How to red-team your LLM application before shipping to production. Covers prompt injection, jailbreaks, PII leakage, automated adversarial testing with Python, NeMo Guardrails defense, and building a repeatable test suite.
Honest review of Teleport — the unified access platform for SSH, Kubernetes, databases, and web apps. Setup complexity, tsh CLI, certificate auth, session recording, and how it compares to Tailscale and HashiCorp Boundary.
Learn Linux file permissions from scratch — how to read ls -la output, use chmod and chown, understand octal vs symbolic mode, SUID/SGID/sticky bit, umask, and why chmod 777 is dangerous.
Need to expose a local service, connect private networks, or enable zero-trust access? Compare Cloudflare Tunnel, ngrok, and Tailscale to pick the right one.
Rate limiting protects your APIs and infrastructure from overload and abuse. Here's what it is, how it works, and how to implement it in Nginx, Kubernetes, and code.
Both detect suspicious behavior inside running containers in real time, but Falco uses kernel module/eBPF rules while Tetragon is built natively on Cilium's eBPF stack. Here's how they actually differ.
HashiCorp Vault restarts sealed and won't come back up, blocking every service that reads secrets from it. Here's how to diagnose unseal failures and fix the root cause, not just unseal-and-pray.
Writing NetworkPolicy YAML by hand is error-prone and easy to get wrong. Build a tool that reads your namespace's actual traffic patterns and generates a least-privilege NetworkPolicy using Claude API.
Three ways to enforce policy in Kubernetes: Rego-based OPA Gatekeeper, YAML-native Kyverno, and WASM-based Kubewarden. Here's how they actually differ in practice, with real policy examples.
Three serious container image scanning tools, one decision. Trivy, Grype, and Snyk each solve container security differently. Here's the honest comparison — speed, accuracy, CI/CD integration, and cost.
Kubernetes 1.30 made Validating Admission Policy GA. It lets you enforce cluster policies using CEL expressions — no OPA, no Gatekeeper, no webhook needed. Here's how it works and when to use it.
Both Renovate and Dependabot automatically update dependencies in your repos. Here's the real difference, which one handles monorepos and complex setups better, and which to use.
Build a Python CLI tool using Claude API that analyzes Kubernetes YAML manifests before deployment — catches missing resource limits, root containers, and security issues with a go/no-go score.
Deploying LLMs without guardrails causes prompt injection and data leakage. Here's how to build a layered safety system using regex, Claude-as-judge, and NeMo Guardrails.
LLMs in production face real security threats: prompt injection, jailbreaks, sensitive data leakage, and SSRF via tool calls. Learn the attacks and defenses for production AI systems.
Zero Trust means never trust, always verify — even inside your network. Learn the core principles, how to implement it in Kubernetes and AWS, and the tools DevOps teams actually use.
Your Kubernetes pod can't access AWS services even though IRSA is configured. Here's every reason IRSA fails and exactly how to debug and fix each one.
Container image layers are the building blocks of Docker images. Learn how layers work, why they matter for build speed and security, and how to keep your images lean.
Admission webhooks intercept every Kubernetes API request before it's persisted. Learn how mutating and validating webhooks work, with real examples from OPA, Istio, and custom webhooks.
Multi-tenancy in Kubernetes lets multiple teams share one cluster safely. Learn namespace-based tenancy, vCluster, RBAC, network policies, and when to go single vs multi-tenant.
Choosing a service mesh for Kubernetes? Istio, Linkerd, and Cilium solve the same problem with very different approaches. Here's the honest comparison with real trade-offs.
By default, all pods in Kubernetes can talk to each other. Network Policies let you control exactly which pods can communicate. Here's how they work with practical examples.
Build a tool that scans Dockerfiles for security issues using Claude API — finds hardcoded secrets, root users, unscanned base images, and missing security best practices.
Choosing between AWS Secrets Manager, HashiCorp Vault, and External Secrets Operator for Kubernetes? Here's a practical breakdown of when to use each and what the trade-offs actually are.
RBAC in Kubernetes controls who can do what in your cluster. Learn what Roles, ClusterRoles, RoleBindings, and ServiceAccounts are with real examples.
Your GitHub Actions workflow can't authenticate to AWS using OIDC. You're getting 'Not authorized to perform sts:AssumeRoleWithWebIdentity' or token errors. Here's every cause and the exact fix for each one.
IAM is how AWS decides who can do what. Here's a plain-English explanation of users, groups, roles, and policies — with real examples of how they're used together.
Datadog and Splunk are both enterprise observability platforms but serve different strengths. Here's the honest comparison — pricing, use cases, and which one to choose.
Vault Agent Injector not mounting secrets into your pod? Here's how to debug and fix Vault secret injection issues in Kubernetes step by step.
Getting 'admission webhook denied the request' or webhook timeout errors in Kubernetes? Here's how to debug and fix admission webhook issues step by step.
SSH (Secure Shell) is how engineers connect to remote servers. Here's what SSH actually is, how it works, and how to use it — explained without jargon.
Pod Security Admission replaced PodSecurityPolicy in Kubernetes 1.25. Here's what it does, how the three security levels work, and how to enforce it in your cluster.
SSL and TLS are everywhere — HTTPS, certificates, cert-manager, Let's Encrypt. Here's what SSL/TLS actually is, how the handshake works, what certificates do, and what you need to know as a DevOps engineer.
Linkerd vs Istio head-to-head comparison — performance, complexity, features, and which one to pick for your Kubernetes setup in 2026.
Build a GitHub Actions workflow that automatically reviews every pull request using Claude AI — catches bugs, security issues, and bad patterns before human review.
ConfigMaps and Secrets separate configuration from code in Kubernetes. Here's what they are, how they work, and when to use each one — explained simply.
mTLS means both sides of a connection verify each other's identity. It's the backbone of zero-trust networking in Kubernetes service meshes. Here's how it works in plain language.
A complete end-to-end DevSecOps pipeline with SAST, container scanning, secrets detection, DAST, and supply chain security using open-source tools.
Service Accounts and RBAC confuse most beginners. Here's what they are, why they exist, and how to set them up correctly.
Getting 'Access Denied' or 'is not authorized to perform' errors in AWS? Here's how to diagnose and fix every IAM permission issue — EC2, EKS, Lambda, S3, and CLI.
Step-by-step project walkthrough: add security scanning, code quality gates, and policy enforcement to a GitHub Actions pipeline. Real configs, production-ready.
Comparing the top three secrets management solutions for Kubernetes and cloud environments in 2026. Pricing, features, complexity, and when to pick each.
Service mesh sounds complicated but the concept is simple. Here's what it actually does, why teams use it, and whether you need one — explained without the buzzwords.
How AI agents are automating Terraform code review with security scanning, cost estimation, best practice enforcement, and drift prevention. Covers practical tools, custom LLM pipelines, and CI/CD integration.
Step-by-step guide to installing and configuring Istio service mesh on Kubernetes. Covers traffic management, mTLS, observability, canary deployments, and production best practices.
Why WebAssembly (Wasm) is poised to disrupt Docker containers in cloud-native computing. Covers SpinKube, WASI, Fermyon, wasmCloud, and the practical timeline for adoption.
Complete guide to Kubernetes NetworkPolicies: default deny, ingress/egress rules, namespace isolation, CIDR blocks, and production patterns for zero-trust pod networking.
Step-by-step guide to installing and configuring Istio service mesh on Kubernetes — traffic management, mTLS, observability, and canary routing with practical examples.
Complete guide to Podman: daemonless containers, rootless security, Docker compatibility, pods, systemd integration, and why teams are switching from Docker in 2026.
Learn how to use Kyverno to enforce security policies, validate resources, mutate configurations, and generate defaults in your Kubernetes clusters.
Master Cilium — the eBPF-based CNI that's become the default for Kubernetes networking. Covers installation, network policies, Hubble observability, and service mesh mode.
Step-by-step guide to setting up Tailscale for secure access to Kubernetes clusters, databases, and internal tools without traditional VPNs.
A comprehensive guide to software supply chain security in 2026 — covering SBOMs, the SLSA framework, artifact signing with Cosign and Sigstore, and how to implement it all in your CI/CD pipeline.
cert-manager Certificate stuck in a non-Ready state is a common Kubernetes TLS issue. This guide covers every root cause — DNS challenges, RBAC, rate limits, and issuer problems — with step-by-step fixes.
HashiCorp Vault is the industry standard for secrets management. This step-by-step guide shows you how to install Vault, configure it, and integrate it with Kubernetes.
Understand AWS VPC from the ground up — subnets, route tables, security groups, NACLs, VPC peering, Transit Gateway, and real-world architectures for production workloads.
A step-by-step guide to building a complete DevSecOps pipeline. Learn how to embed security scanning, SAST, secrets detection, and container vulnerability scanning into your CI/CD workflow using GitHub Actions.
A complete Docker security checklist for production. Cover image hardening, runtime security, secrets management, network isolation, and scanning — with real examples.