Automating Infrastructure Reconnaissance: Building Free OSINT Tools

Security teams increasingly need cost-effective ways to audit infrastructure as attack surfaces grow more complex, yet premium intelligence tools come with significant subscription costs. This project demonstrates that free tools—when strategically combined—can automate the full reconnaissance workflow and identify critical vulnerabilities like DMARC misconfigurations and Tor node exposure without any paid services. By making enterprise-grade threat intelligence accessible on a zero-dollar budget, the approach reshapes how smaller teams can compete on infrastructure security.