v1.0.0

HeaderGuard v1.0.0 — a self-hosted web security analysis tool.

Give it a domain or URL and it checks security headers, cookies, TLS, redirects,
DNS, and HSTS preload, then grades the site from A+ to F. Ships as a single static
Go binary with both a web UI and a CLI mode — no runtime dependencies.

• 🔒 21 security header rules with plain-language fixes
• 🍪 Cookie flags (Secure, HttpOnly, SameSite)
• 🔐 TLS versions + certificate inspection
• 🔁 Redirect chain & HTTPS downgrade detection
• 🌐 DNS: CAA, SPF, DMARC, DNSSEC
• 📊 A+ to F grade, JSON/Markdown export
• 🖥️ Web UI + terminal CLI

Authorized testing only — use on systems you own or have permission to test.

Note: HeaderGuard is written in Go and released as single static binaries —
no installer, .deb, or .zip needed. Download the binary for your OS, then run
it directly. On Linux/macOS run chmod +x <binary> first.