Container & Kubernetes SecurityOpen source · Apache-2.0
Open Policy Agent
Community project
A general-purpose policy engine that evaluates decisions against policies written in its Rego language, applied to Kubernetes admission control through the Gatekeeper project and well beyond it — API authorization, CI/CD gates, and infrastructure policy. A graduated CNCF project since 2021; created at Styra, whose founders moved to Apple in 2025 while OPA continues under CNCF governance.
Verified Source: 1
- Product type
- Community project
- Deployment
- On-premCLI
- Organization size
- SMBMid-marketEnterprise
- Pricing tier
- Free
Capability checklist
How Open Policy Agent measures up against the full Container & Kubernetes Security taxonomy.
- Container image scanning — not supported
- Scans container images for vulnerabilities and exposed secrets before deployment.
- Runtime threat detection — not supported
- Detects anomalous process and system-call behavior in running containers.
- Kubernetes posture management (KSPM) — not supported
- Flags misconfigured cluster settings, RBAC, and pod security policies.
- Admission control — supported
- Blocks noncompliant workloads from being deployed to the cluster in the first place.
- Runtime response actions — not supported
- Kills, isolates, or quarantines a compromised container or pod.
- Registry scanning — not supported
- Continuously rescans image registries for newly disclosed vulnerabilities.
Alternatives
Other Container & Kubernetes Security tools with overlapping capabilities, sized for similar teams.