Security first: public code, exposed files and email-auth posture
The first pass looks at what anyone can already fetch before a buyer, reviewer or attacker sees it.
Frontend secret exposure
Risky public patterns for OpenAI, Anthropic, Stripe live, AWS, Google, GitHub and private-key material.
Exposed files and domain hygiene
Reachable .env and .git paths, CSP, frame protections, HTTPS/HSTS, security.txt, SPF and DMARC.