Skill UI

This guide details how to conduct comprehensive external reconnaissance using Open Source Intelligence (OSINT) techniques. It teaches testers to passively map an organization's entire digital footprint, including enumerating subdomains, discovering internet-facing infrastructure (via Shodan/Censys), identifying personnel data, and analyzing leaked credentials from public sources. Ideal for the initial phases of penetration testing or red team engagements.

This tool monitors Certificate Transparency (CT) logs to detect unauthorized certificate issuance for owned domains, discover hidden subdomains, and track suspicious certificate activity. By querying public CT logs and APIs (like crt.sh), it helps build continuous security pipelines, identify potential phishing infrastructure, and map the external attack surface for comprehensive threat intelligence.