Security-First Engineering.
Not Security After the First Incident.
Every Kynoku deployment is gate-checked against the OWASP Top 10 before it reaches production. We don't patch vulnerabilities — we eliminate the conditions that create them. The result is a codebase that passes regulatory audit by default, not by exception.
The Technical Stack
Every technology choice serves a security function. Nothing is included for convenience — each layer hardens the surface.
TypeScript
Type safety eliminates an entire class of runtime errors — undefined property access, implicit type coercion, and unvalidated API payloads. Every function boundary is a contract enforced at compile time, not discovered in production.
Next.js App Router
Server Components render on the server by default — no client-side JavaScript ships unless explicitly required. This reduces the attack surface by eliminating exposed API keys, minimising client bundle size, and enforcing secure data-fetching patterns at the framework level.
Content Security Policy (CSP)
Every page is served with a nonce-based Content Security Policy. Inline scripts without a valid nonce are blocked at the browser level — neutralising XSS vectors before they execute. Our CSP is generated per-request in middleware, not hardcoded as a static header.
Auth.js (NextAuth)
Session management uses server-side encrypted JWTs with CSRF protection, automatic token rotation, and provider-agnostic OAuth flows. No session data is stored in localStorage or exposed to client-side JavaScript.
HSTS Enforcement
HTTP Strict Transport Security headers with includeSubDomains and preload directives ensure every connection is TLS-encrypted. Downgrade attacks and SSL-stripping are eliminated at the protocol level.
Security Posture — Live Status
Real-time verification state of every hardening layer deployed across production infrastructure.
Rate Limiting
Deterministic thresholding to mitigate brute-force and DoS vectors. Per-route limits enforced before application logic executes.
CSP Header
Strict Content Security Policy preventing unauthorized script injection. Nonce-based, generated per-request in middleware.
Auth.js Integration
OAuth 2.0 / OpenID Connect with encrypted JWT session handling. No session data exposed to client-side JavaScript.
HSTS Enforcement
HTTP Strict Transport Security with includeSubDomains and preload directives. Downgrade attacks eliminated at protocol level.
Output Encoding
Context-aware encoding on all dynamic content. dangerouslySetInnerHTML audited on every occurrence across the codebase.
OWASP Regression
Full OWASP Top 10 regression suite executed against every deployment. Injection, XSS, broken access control — all verified.
The Audit — 10-Point Deployment Checklist
No deployment ships without passing every checkpoint. This is non-negotiable — it runs on every release, not just the first.
- 01
Input Validation at Every Boundary
All user input is validated server-side using strict schemas (Zod). Client-side validation is cosmetic only — never trusted.
- 02
Rate Limiting on Public Endpoints
Every public-facing API route enforces request-rate limits. Brute-force login attempts, form spam, and enumeration attacks are throttled before they reach application logic.
- 03
Dependency Audit at Build Time
npm audit runs on every build. Known vulnerabilities in transitive dependencies are flagged as build-breaking errors — not warnings to be ignored.
- 04
CSP Header Verification
Content Security Policy headers are verified per-deployment. Script sources, style sources, and connect sources are locked to an explicit allowlist.
- 05
OWASP Top 10 Regression Check
Injection, broken authentication, sensitive data exposure, XXE, broken access control, security misconfiguration, XSS, insecure deserialisation, vulnerable components, and insufficient logging — each is tested against the live deployment.
- 06
Authentication Flow Penetration Test
Login, registration, password reset, and session management flows are manually tested for logic flaws, token leakage, and privilege escalation.
- 07
Security Header Audit
X-Content-Type-Options, X-Frame-Options, Referrer-Policy, Permissions-Policy, and Cross-Origin headers are verified present and correctly configured.
- 08
Environment Secret Isolation
No secrets in version control. Server-only environment variables are validated at startup — missing keys fail the deployment, not the first user request.
- 09
Least-Privilege Service Accounts
Database connections, API integrations, and third-party services operate with the minimum permissions required. No admin-level service accounts in production.
- 10
Output Encoding & XSS Prevention
All dynamic content is context-aware encoded before rendering. React's JSX escaping is the baseline — dangerouslySetInnerHTML is audited on every occurrence.
The Hardened Standard
- ✓UCD Professional Academy — Cybersecurity Distinction
- ✓OWASP Top 10 Compliance on Every Deployment
- ✓GDPR-Native Architecture (Privacy by Design)
- ✓ISO 27001 Aligned Processes
- ✓WCAG 2.1 AA Accessibility Standard
Post-hardening OWASP regression result for a Monaco-based fintech platform.
SecurityHeaders.com grade after CSP, HSTS, and Permissions-Policy deployment.
Time from initial audit to production-deployed security patch across 12 endpoints.
Initiate a Security & Vulnerability Audit
A 20-minute architecture review to map your current exposure surface, identify OWASP Top 10 gaps, and define the hardening path. No charge, no obligation.
Initiate AuditOn-site consultations available in Nice, Cannes, and Monaco. Global deployment from our technical hub.