Fortress Banner — Security Protocol

Overview

The Fortress Banner is a comprehensive security protocol that protects every layer of the Fortress Ecosystem. It implements four core principles: Guard (intrusion prevention), Shield (header hardening), Seal (strict CSP with nonces), and Light (WCAG AA accessibility).

The Four Layers

🛡️ Guard

Intrusion prevention and threat detection. The Banner Guard scanner runs 13 specialized agents to detect vulnerabilities, prompt injection, and malicious payloads before they reach the system.

13-agent security scanner
Prompt injection detection
File-based attack prevention
Supply chain verification

🔒 Shield

Header hardening and transport security. Every response is wrapped with military-grade security headers that prevent clickjacking, MIME sniffing, XSS, and data leakage.

X-Frame-Options: DENY
X-Content-Type-Options: nosniff
Strict-Transport-Security with preload
Permissions-Policy restrictions

💎 Seal

Strict Content Security Policy with per-request nonces. Every script and style tag must carry a unique cryptographic nonce, eliminating injection attacks entirely.

CSP with nonce-based script/style whitelisting
Cross-Origin-Embedder-Policy
Cross-Origin-Opener-Policy
Cross-Origin-Resource-Policy

💡 Light

WCAG AA accessibility layer. The Fortress Theme ensures every page is usable by everyone, regardless of ability. Screen readers, keyboard navigation, and high contrast modes are first-class citizens.

WCAG AA compliant color contrast
ARIA labels and roles on all interactive elements
Keyboard navigation support
Reduced motion and high contrast modes

Security Headers Reference

Header	Value	Purpose	Status
`X-Frame-Options`	`DENY`	Prevents clickjacking attacks	Active
`X-Content-Type-Options`	`nosniff`	Prevents MIME type sniffing	Active
`Strict-Transport-Security`	`max-age=31536000; includeSubDomains; preload`	Enforces HTTPS for 1 year	Active
`Content-Security-Policy`	`nonce-based`	Restricts script/style sources with per-request nonces	Active
`Referrer-Policy`	`strict-origin-when-cross-origin`	Controls referrer information leakage	Active
`Permissions-Policy`	`camera/mic/geo/payment/usb: none`	Disables unnecessary browser features	Active

Implementation

Apply Banner security to your Express.js application:

          
const { bannerSecurity } = require('./banner-security');

app.use(bannerSecurity);

// All routes now have Guard, Shield, Seal, and Light active.