ShieldOps Blog

Discover the latest practices and guides for Docker, Kubernetes, and DevSecOps.

Dockerfile Linting Automation: Hadolint Rules Every Team Should Usetips

Dockerfile Linting Automation: Hadolint Rules Every Team Should Use

Automate Dockerfile linting with Hadolint: the 10 rules every team should enforce (version pinning, non-root, COPY over ADD, exec-form CMD), how to wire the gate into CI/CD, and how linting maps to CIS, PCI DSS, and NIST compliance.

2026-07-31Read More ⟶
Weekly Security Hygiene: A 15-Minute Checklist for Container Teamstips

Weekly Security Hygiene: A 15-Minute Checklist for Container Teams

Establish a 15-minute weekly container security hygiene routine that catches misconfigurations, stale credentials, and unpatched vulnerabilities before they become breaches. Includes a complete checklist with commands for vulnerability scanning, image freshness, runtime behavior, secret rotation, access control, compliance checks, and log review.

2026-07-14Read More ⟶
Shell Command Security: 10 Dangerous Patterns in Dockerfiles and How to Fix Themtips

Shell Command Security: 10 Dangerous Patterns in Dockerfiles and How to Fix Them

Shell commands are the most executed code in any Docker build yet the least audited. Learn 10 dangerous shell patterns — from curl|bash to injected secrets — and how to fix each one with secure alternatives.

2026-07-13Read More ⟶
4 Kubernetes Annotations That Instantly Improve Your Security Posturetips

4 Kubernetes Annotations That Instantly Improve Your Security Posture

Discover four Kubernetes annotations that instantly harden your cluster's security: seccomp syscall filtering, AppArmor profiles, Pod Security Admission enforcement, and ingress TLS-only access. Practical YAML examples included.

2026-07-12Read More ⟶
Docker Bridge Network Security: One Setting That Changes Everythingtips

Docker Bridge Network Security: One Setting That Changes Everything

Docker's default bridge network leaves every container open to every other container — one compromised container becomes a launchpad for lateral movement. Learn how the single `icc: false` setting stops container-to-container attacks at the virtual switch level.

2026-07-11Read More ⟶
Container Vulnerability Triage: Separating Real Threats From Noisetips

Container Vulnerability Triage: Separating Real Threats From Noise

Container vulnerability triage is the systematic process of evaluating, prioritizing, and filtering security findings to separate real, exploitable threats from noise. Learn a practical 4-step framework that reduces scanner noise by 80% and catches every genuinely dangerous vulnerability.

2026-07-10Read More ⟶
Top 10 kubectl Plugins for Security Engineers in 2026tips

Top 10 kubectl Plugins for Security Engineers in 2026

Top 10 kubectl plugins for security engineers in 2026 — install with Krew, audit RBAC, capture network traffic, decode secrets, find outdated images, and scan for deprecated APIs.

2026-07-09Read More ⟶
Docker Image Size Reduction: 8 Techniques That Also Improve Securitytips

Docker Image Size Reduction: 8 Techniques That Also Improve Security

Every megabyte in your Docker image is a potential vulnerability. This guide covers 8 proven techniques — from multi-stage builds to distroless images — that shrink your containers by 60-90% while slashing your CVE count and improving compliance with CIS, NIST, and PCI DSS standards.

2026-07-08Read More ⟶
Kubernetes Debugging Secrets: 7 kubectl Commands Security Engineers Needtips

Kubernetes Debugging Secrets: 7 kubectl Commands Security Engineers Need

Master 7 kubectl commands for Kubernetes security debugging: from pod inspection (describe), crash forensics (logs --previous), runtime analysis (exec), RBAC auditing (auth can-i), event correlation (get events), resource anomaly detection (top), to API server telemetry (get --raw /metrics). Real incident response example included.

2026-07-07Read More ⟶
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