Security / DevSecOps
Security embedded at every stage — from the commit to runtime. Not just the last gate before production.
Security Toolchain
Shift-Left Security
Catch vulnerabilities in CI before they reach production. Unsigned images and CVE-containing artifacts never reach the cluster.
Container Image Scanning (Trivy)
CVE scanning of base images and application dependencies in CI. Images with CRITICAL or HIGH findings fail the build automatically; remediation reports generated per scan.
SBOM — Software Bill of Materials
Generate a software bill of materials per image using Syft or Trivy. Supply chain transparency and a permanent record of what's running in production.
Supply Chain Security
Sign images with Sigstore/Cosign. Enforce that only signed images enter the cluster via Kyverno or OPA policy. No signature, no deployment.
SonarQube Pipeline Integration
Add a SonarQube quality gate to your CI pipeline. Commits with security vulnerabilities, bugs, or code smells are blocked from merging automatically.
Defense in Depth: How We Apply It
Each layer catches what the previous one missed. Layered defence from build to runtime.
- 1
Security Assessment
Document CVE density, RBAC gaps, network policy holes, and secrets management weaknesses using kube-bench. Baseline before any changes.
- 2
Shift-Left Integration
Add Trivy, SBOM generation, and SAST tools to the CI pipeline. Any commit containing a CRITICAL finding cannot be merged.
- 3
Policy Enforcement
OPA/Kyverno admission policies: unsigned images, root containers, and excessive privilege are all rejected at the cluster gate.
- 4
Runtime Hardening
Real-time anomaly detection with Falco, CIS Benchmark compliance, and Network Policy default-deny namespace isolation.
3-Layer Security Barrier
For a vulnerable image to reach production, it must pass three independent barriers. Each one is automated and operates without human intervention.
Trivy Image Scan
Images with CRITICAL/HIGH CVEs fail CI automatically. Remediation report generated.
SBOM Generation
Software bill of materials via Syft for every image. Full supply chain transparency.
Cosign Signing
Every production image is cryptographically signed in CI with Cosign.
OPA / Kyverno Policy Engine
Admission webhook: unsigned image, root container, privileged pod, missing resource limit → REJECT. Never enters the cluster.
Pod Security Standards
Restricted profile per namespace. PodSecurityAdmission controller records and blocks non-compliant workloads.
Falco Runtime Detection
Shell spawned inside a container, critical file write, ptrace syscall → immediate alert. Zero-false-negative goal.
CIS Benchmark Hardening
kube-bench verification of API server, etcd, and kubelet parameters against the CIS profile. Periodic audit.
Network Policy
Default-deny on every namespace. Cilium or Calico enforces only explicitly permitted service traffic.
Core principle: Each barrier operates independently. If one is bypassed, the others remain active — defense in depth.
Container Security
Control how images run. Non-root user, read-only filesystem, and minimum Linux capabilities — applied consistently to every workload, not just when someone remembers.
SecurityContext Configuration
runAsNonRoot, readOnlyRootFilesystem, allowPrivilegeEscalation=false, and Linux capability restrictions (drop: ALL) applied per workload — no privileges left open unless explicitly required.
Pod Security Standards
Restricted, Baseline, and Privileged profiles enforced per namespace via PodSecurityAdmission. Non-compliant workloads are rejected at admission, not discovered later.
Non-root Base Images
Dockerfile best practices: distroless or minimal alpine base, non-root user, multi-stage builds to exclude build tools from the final image.
Cluster Security
From CIS Benchmark to runtime security — harden the cluster itself. Misconfiguration and over-privilege are the most common attack vectors in Kubernetes environments.
Kubernetes CIS Benchmark
kube-bench assessment of API server, etcd, kubelet, and scheduler security parameters. Remediation applied against the CIS Kubernetes Benchmark profile.
Network Policy
Default-deny namespace policies. Explicit allowlists for service-to-service traffic. Policy enforcement via Cilium or Calico.
RBAC Audit and Least Privilege
Identify over-privileged service accounts using kubectl auth can-i and audit logs. Replace ClusterRoles with namespace-scoped Roles wherever possible.
Audit Policy
Kubernetes API audit log configuration. Critical resource mutations (secrets, configmaps, clusterrolebindings) are logged and wired to alerts.
Runtime Security — Falco
Real-time detection of anomalous syscall behaviour in production: shell opened inside a container, writes to sensitive file paths, unexpected network connections.
Secrets Management
Stop storing secrets in ConfigMaps. HashiCorp Vault or External Secrets Operator for centralised secret distribution. cert-manager for certificate lifecycle management.
Technologies
Who is this for?
Companies with compliance requirements (ISO 27001, SOC 2, PCI-DSS) and teams that want to improve security maturity. Specifically, engineering teams that haven't audited RBAC, are still storing secrets in ConfigMaps, or don't know which service can reach which other service in their cluster — and who want that fixed with proper tooling, not just a checklist.
Ready to talk through your stack?
A direct technical conversation about where you are and what needs fixing.
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