Cloud-native systems - containers, Kubernetes, service meshes, serverless - break every assumption of traditional security. Perimeters dissolve. IPs change constantly. Workloads are ephemeral. Secrets sprawl across environment variables, config maps, and CI/CD pipelines.
Cloud native security replaces perimeter trust with identity-based trust, static firewall rules with policy-as-code, manual certificate management with automatic workload identity, and reactive monitoring with runtime threat detection.
The Five Pillars of Cloud Native Security
- Workload Identity: Every service gets a cryptographic identity (SPIFFE/SPIRE)
- Zero Trust Networking: No implicit trust - verify every request (mTLS, network policies)
- Policy-as-Code: Security rules are versioned, tested, and deployed like application code (OPA, Kyverno)
- Runtime Protection: Detect and prevent threats in real-time (Falco, Tetragon, eBPF)
- Supply Chain Security: Verify every artifact from source to deployment (Sigstore, SLSA, SBOM)
Learn Cloud Native Security - Free
Our free Cloud Native Security Engineering course takes you from beginner to production-ready across all five pillars. 16 modules, 50+ hands-on labs, zero paywalls.