Open Source Intelligence - Table of Contents Additional helpful links! Open Source Intelligence Definition: 10 Minute OSINT Tips: Numerous OSINT Tools: OSINT Our Target Passive Recon WHOIS Google Cache TinyEye Reverse Image Search Financial Reports Google Searching Semi-Passive Recon Wappalyzer Shodan/Censys/ZoomeEye FOCA DIG Exploit-DB/GHDB HTTrack Active Recon Nmap SMTP Bouncing DNSRECON The Harvester Fierce Summary