How Public DNS Records Expose Corporate Infrastructure and Security Philosophy

Public DNS records inadvertently reveal a company's infrastructure choices, third-party service integrations, and security policies—information more actionable than most vendor marketing materials. The comparison between Stripe's minimal, rejection-first approach and GitHub's flexible, quarantine-based strategy demonstrates how business models drive fundamentally different security tradeoffs. For vendor evaluation and security due diligence, simple DNS queries expose critical details about attack surface and risk profile.