Layered Rollout for Security-First Design Principles: Baseline, Advanced, and Strategic Controls

[smishra_arch]

This issue establishes actionable enterprise-grade security-first design principles for all architecture work in this repository, structured for a layered rollout: Baseline (minimum enforcement), Advanced (enhanced controls), and Strategic (future-state, continuous improvement). These principles apply across technology stack—frontend, backend, services, APIs, integrations—and align with OWASP and industry standards (ISO/IEC 27001, NIST, CIS, PCI DSS).

Layered Security Rollout

Baseline Controls (Minimum Enforcement)

• OWASP ASVS target level per application; documented deviations.
• MFA enforced for all human and administrative access; centralized IdP/OIDC integration.
• Strong session management (secure cookie flags, inactivity timeout, refresh token rotation).
• Universal transport encryption (TLS 1.2+/prefer 1.3); encryption at rest for all sensitive data.
• SCA (JFrog Xray) with build blocking on high/critical vulnerabilities.
• SAST and secrets scanning with defined gating thresholds.
• Standard input validation & output encoding libraries; parameterized queries / ORM usage mandated.
• Dependency provenance, SBOM for every build (CycloneDX/SPDX) reviewed at sign-off; disallow stale/unmaintained libraries unless exception.
• Secure-by-default configuration profiles & hardened baselines (CIS); drift detection.
• Identity & access: least privilege RBAC/ABAC, short-lived tokens, no long-lived static admin creds.
• Environment segregation: no production credentials or data in non-prod (synthetic/anonymized only).
• Centralized logging (auth events, privilege changes, config modifications); time sync (NTP); minimum retention policy defined.
• Secure error handling (no sensitive leakage, sanitized exceptions).
• Secure frontend/browser minimum headers (X-Content-Type-Options, basic CSP scaffold, frame protections, Referrer-Policy); CSRF controls where applicable.
• Secrets management: all secrets in approved vault/KMS; automatic revocation on offboarding.
• Basic vulnerability management taxonomy + baseline remediation targets (e.g., Critical ≤72h).
• Rate limiting for public/API endpoints; protected health/status endpoints.
• Service/application inventory (owner, ASVS level, data classification, threat model status).
• Branch protection rules (review before merge, passing checks, no force push).
• Ephemeral CI/CD build agents; controlled artifact promotion.
• Mandatory design review checklist (authentication, authorization, validation, cryptography, data lifecycle, secrets, error handling, logging, privacy, dependency posture, resilience, threat model, SBOM, risk acceptance).
• Security champions program (one per squad).
• Exception register (time-bound, justification) even at Baseline.
• Minimum KPIs tracked: SAST coverage %, SBOM coverage %, threat model scheduling %, open critical vulns count.

Optional until Q2 (does not pose immediate threat, recommended for medium-term adoption)

• Commit signing recommendation (plan for adoption).
• Minimum log retention period (≥1 year archived) beyond baseline hot retention.
• Prohibit use of packages with no maintainer activity (>12 months) unless exception documented.
• Synthetic/anonymized data strategy for non-prod (if not already in place).
• Secure frontend advanced headers (full CSP, HSTS, advanced frame protections) and browser security features.
• Automated secrets rotation cadence for low-risk service accounts.
• Automated ephemeral CI/CD environment teardown.

Advanced Controls

• Artifact signing (Cosign/Sigstore), progression to SLSA Level targets.
• Threat modeling and abuse case catalog required for all new features/services/integrations; versioned models stored with design docs.
• Security architecture patterns library; reusable approved reference implementations.
• Data classification mapping for flows; encryption, retention, masking, monitoring enforced.
• Centralized KMS, strict key rotation schedules, no secrets in code/repos.
• Service isolation, network segmentation, zero-trust (mTLS, explicit allow rules).
• Secure supply chain builds: ephemeral agents, no long-lived credentials, artifact promotion from verified pipelines.
• Secure third-party/SaaS integration checklist: vendor risk, contractual clauses, exit strategies, periodic reassessment.
• Fuzzing/IAST for critical components pre-release; DAST for external attack surface.
• Vulnerability triage workflow with SLA tiers and tracked MTTR; automated dependency update channels enforced.
• Exception/waiver process: time-bound, documented, automated expiry notification, remediation plan required.
• Compliance traceability: control mapping to OWASP, NIST CSF, PCI DSS, regulatory standards.
• Secure IaC deployment templates with policy-as-code guardrails.
• Security posture dashboards: threat model coverage, SBOM age, patch MTTR, secret rotation, exception count.
• Developer enablement: secure coding guidelines (CWE), pattern/anti-pattern catalog, sandbox training labs.
• Continuous configuration scanning (IaC misconfig baseline).
• License compliance scanning and open source policy enforcement.
• Patch window definition per component risk tier.
• Red/blue/purple team readiness guidelines included in design.
• Detection engineering artifacts linked to design features.

Strategic Controls (Continuous Improvement)

• Security Scorecard dashboard (threat model % coverage, SBOM freshness, patch MTTR, secret rotation, exception count).
• Formal review cadence: annual holistic architecture security review, semiannual pattern library refresh, threat model refresh triggers.
• Container image signing, scanning, and enforced seccomp/apparmor profiles (non-root, read-only FS); drift detection for running containers vs IaC manifest.
• Runtime anomaly detection (eBPF/cloud workload protection) design.
• RASP or lightweight runtime guards for high-risk transactional services.
• WAF/API Gateway baseline (OWASP CRS), secure headers (CSP, HSTS, X-Frame-Options), CDN/edge hardening, egress control, DLP strategy.
• Multi-tenancy isolation design (if applicable): cryptographic segregation, resource controls, noisy neighbor protection.
• Mobile/edge client security (if applicable): MASVS, secure storage, jailbreak/root detection.
• Cloud posture management: CSPM baseline, mandatory guardrails, public exposure scanning, policy maturity alignment (Cloud Controls Matrix).
• Performance vs security trade-off documentation with accepted risk and alternative mitigations.
• Formal onboarding/offboarding security checklist (access, secrets rotation triggers).
• Incident response mapping in design artifacts; control failure injection exercises plan.
• Data minimization justification and pseudonymization/anonymization strategy.
• Data retention enforcement via automated lifecycle jobs.
• Periodic architecture drift detection comparing deployed manifests vs approved design baseline.

References

• OWASP Security Principles
• OWASP ASVS
• OWASP API Security Top 10
• ISO/IEC 27001 Security Standard
• NIST Cybersecurity Framework
• CIS Controls
• PCI DSS
• JFrog Xray
• CycloneDX
• SLSA
• MASVS

Next Steps

• Assign team members to review/enhance implemented controls and design-time requirements at each rollout layer.
• Incorporate these principles into new design and policy documentation.
• Draft a formal policy document for approval and enterprise-wide rollout.

This issue sets the foundation for a robust, secure-by-design approach, layered for traceable, auditable, and actionable controls, ensuring enterprise-grade security posture from architecture through implementation and continuous improvement.