91/100 — Very good. All critical areas are secured: TLS 1.3 with post-quantum key exchange (X25519MLKEM768), HSTS 2-year preload with includeSubDomains, comprehensive security headers, HAProxy WAF filtering (TRACE/DEBUG/CONNECT blocked, common attack paths returning 403), no sensitive port exposed externally, secure cookies, and response header removal. Minor findings (4 low, 1 medium): version disclosure on /status.php and /api/v1/welcome, RustFS console publicly reachable (credentials required — disable when unused), coturn without TLS, no rate limiting at reverse proxy level, CSP not enforced on Collabora and Whiteboard subdomains — none are blocking for production use.