Devoxn Security Architecture
We implement defense-in-depth principles across every layer of the application—from database engine policies to client redirect validation.
PostgreSQL Row Level Security (RLS)
All ten core database tables enforce mandatory Row Level Security policies. Tenant data isolation is guaranteed at the database engine level, strictly preventing cross-workspace leakage.
Document Vault & Cryptographic Checksums
Uploaded policy and contract attachments undergo binary magic-byte inspection to verify genuine file types, alongside SHA-256 client/server integrity checksum validation. Files are served via signed, short-lived URLs (120-second TTL).
Timing-Safe Cryptographic Verifications
All sensitive tokens, webhook signatures (Paddle HMAC-SHA256), and cron execution credentials use constant-time comparison (crypto.timingSafeEqual) to defend against side-channel timing attacks.
Strict HTTP Security Headers & CSP
Production responses enforce strict Content-Security-Policy (CSP), HTTP Strict Transport Security (HSTS with preload), X-Frame-Options (DENY), and nosniff MIME protection.
In-Memory Rate Limiting & Abuse Defense
Sliding-window request throttling guards authentication endpoints (login, signup, password reset), checkout sessions, and webhook handlers against credential stuffing and brute-force attacks.
Open Redirect & PostgREST Sanitization
OAuth callback handlers and login actions sanitize redirect paths to block protocol-relative and external URL injection. Search inputs are sanitized to preserve PostgREST filter structure.