Domain Trust Report • Software Development & Code Hosting

github.com Security Audit & Domain Trust Score

Audit github.com developer security, commit notification authenticity, DMARC reject enforcement, and SSL certificate health.

Quick Answer • github.com Security Posture Rating

github.com operated by GitHub, Inc. (Microsoft) maintains an A+ Trust Rating (98/100). The domain enforces strict DMARC policy (p=reject; pct=100), uses 2048-bit RSA DKIM signatures, and is encrypted with TLS 1.3 certificates issued by DigiCert Global Root G2.

Live Security Audit for github.com

Execute a live multi-protocol audit across DNS, SPF, DKIM, DMARC, and TLS handshake sockets.

Live DNS Probe

Security Architecture Overview: github.com

GitHub protects developer accounts and supply chain integrity with strict DMARC p=reject enforcement, neutralizing fake security alerts and compromised OAuth token lures.

Key Anti-Spoofing & Cryptographic Highlights

Supply Chain Phishing Defense: Strict DMARC prevents spoofed security vulnerability notices.
Hardware Security Key (FIDO2) Enforced: Enterprise authentication standard.

Frequently Asked Questions

Does GitHub use DMARC reject?

Yes. GitHub enforces p=reject to protect open-source developers from targeted credential theft.