> ENGINEERING LIBRARY // V1.0
10 Engineering Manuals
Ephemeral Workload Identities, In-Kernel eBPF Enforcement, SLSA L3 Supply Chains & Post-Quantum TLS 1.3
Zero-Trust Architecture Foundations & NIST SP 800-207
Deconstructing the fundamental transition from perimeter-based defense to Zero-Trust Architecture (ZTA). Detailed implementation of Policy Decision Points (PDP), Policy Enforcement Points (PEP), and the 7 NIST core tenets.
Cryptographic Workload Attestation with SPIFFE & SPIRE
How to implement production-grade workload identity without API keys or passwords. Deep-dive into SPIFFE Verifiable Identity Documents (SVIDs), node/workload attestation, kernel selectors, and automated mTLS rotation.
Kernel-Level Network Microsegmentation via eBPF & Cilium
Eliminating the vulnerability of flat VPC networks through in-kernel eBPF packet processing. Configuring default-deny ingress/egress, L7 protocol inspection, transparent WireGuard mesh, and DNS-aware network policies.
Secretless Infrastructure with Multi-Cloud OIDC Federation
Eliminating long-lived cloud credentials forever. Step-by-step architecture for establishing OIDC trust between GitHub Actions, Kubernetes IRSA, Google Cloud Workload Identity, and Azure Entra ID.
Software Supply Chain Defense: SLSA L3, Cosign & Kyverno
Constructing an unbreachable software delivery pipeline. Keyless container image signing with Sigstore Cosign, Fulcio OIDC, Rekor transparency logs, and Kubernetes Kyverno admission policy enforcement.
Hardware HSM Envelope Encryption, BYOK & Crypto-Shredding
Architecting cryptographic sovereignty over corporate data. FIPS 140-3 HSM master keys, dynamic ephemeral Data Encryption Keys (DEKs), AES-256-GCM envelope patterns, and GDPR Article 17 crypto-shredding.
Runtime Kernel Syscall Enforcement with Cilium Tetragon
Real-time in-kernel attack detection and autonomous prevention. Authoring Tetragon TracingPolicies, inspecting `sys_execve` arguments, preventing container breakouts, and triggering sub-millisecond in-kernel SIGKILL.
Securing Autonomous AI Agents: Zero-Trust Tool Sandboxing
Zero-Trust defense for generative AI systems. Defending against direct and indirect prompt injection, isolating LLM tool execution behind WebAssembly/MicroVM sandboxes, and enforcing strict cryptographic human approval gates.
Post-Quantum Cryptography Migration: ML-KEM & Kyber Hybrid TLS
Defeating the "Harvest Now, Decrypt Later" threat. Practical implementation of NIST-standardized Post-Quantum Cryptography (FIPS 203 ML-KEM / Kyber-768), hybrid X25519 key exchange, and quantum-safe internal mesh design.
Continuous Adversarial Verification & Breach Simulation (BAS)
Proving Zero-Trust posture mathematically through automated breach and attack simulation (BAS), canary credential deployment, deception honeypots, and production chaos security experiments.
Canonical Zero-Trust Defense per NIST SP 800-207 & CISA ZTMM 2.0: Eliminate static credentials, enforce eBPF microsegmentation, and preempt threats with in-kernel runtime telemetry.
Frequently Asked Questions
What is the core philosophical difference between traditional perimeter defense and Zero-Trust Architecture (ZTA)?
Traditional perimeter security relies on the "castle-and-moat" paradigm: once a user or machine crosses the network boundary (e.g. via VPN), they are implicitly trusted with wide lateral network access. Zero-Trust Architecture (NIST SP 800-207) asserts "Never Trust, Always Verify, Assume Breach". Every request—whether originating from outside the organization or inside a private Kubernetes cluster—must be dynamically authenticated, authorized, and cryptographically verified based on contextual signals.
How does NIST SP 800-207 define Policy Decision Points (PDP) and Policy Enforcement Points (PEP)?
Under NIST SP 800-207, the Policy Decision Point (PDP) is the logical brain comprising the Policy Engine (which evaluates continuous enterprise access rules) and the Policy Administrator (which issues or revokes access credentials). The Policy Enforcement Point (PEP) is the gatekeeper (e.g. an Envoy proxy, API gateway, or eBPF kernel hook) that intercepts traffic and strictly permits or terminates connections as instructed by the PDP.
Why are static long-lived credentials (API keys, passwords) considered a critical Zero-Trust anti-pattern?
Static credentials lack contextual temporal binding. Once leaked (via GitHub commit, compromised developer workstation, or CI log), an attacker can exploit them indefinitely from any location without triggering traditional perimeter alarms. Modern Zero-Trust mandates ephemeral credentials (TTL < 1 hour) issued via short-lived OpenID Connect (OIDC) federation, SPIFFE/SPIRE mutual TLS certificates, or hardware-bound FIDO2/WebAuthn passkeys.
How does kernel-level eBPF (Cilium/Tetragon) improve upon legacy iptables for microsegmentation?
Legacy iptables scales linearly O(N), causing severe CPU overhead and latency degradation when clusters scale to thousands of pods and network rules. Furthermore, iptables operates blindly on IP addresses and ports without application context. Cilium eBPF replaces iptables with in-kernel BPF hash maps operating in constant O(1) time, enabling cryptographic identity-based filtering, L7 protocol inspection (HTTP/gRPC/Kafka), and automated in-kernel process termination (SIGKILL) without user-space context switches.
What is SPIFFE/SPIRE and how does it establish workload attestation without secrets?
SPIFFE (Secure Production Identity Framework for Everyone) is a CNCF open standard defining uniform, cryptographic identity strings (SPIFFE IDs) for workloads. SPIRE is its reference implementation. A local SPIRE Agent inspects the Linux kernel (/proc) and container runtime to attest workload attributes (container image SHA, namespace, service account) without the workload ever possessing a private key. It dynamically injects an ephemeral X.509 SVID into the workload's memory via the SPIFFE Workload API.
What is SLSA Level 3 and why is keyless signing via Sigstore Cosign critical for software supply chains?
SLSA (Supply-chain Levels for Software Artifacts) Level 3 certifies that source code was built in an isolated, hermetic, and verifiable build platform where intermediate inputs cannot be tampered with. Sigstore Cosign keyless signing uses short-lived OpenID Connect tokens from the CI runner (GitHub Actions / GitLab CI) and Fulcio Certificate Authority to sign artifacts, recording the cryptographic proof permanently in the public Rekor transparency log without developers needing to manage or store private keys.