Security · 2h ago
Passive Recon on Google.com: What Shodan, WHOIS, DNS Tools Revealed
A security researcher conducted passive reconnaissance on google.com using Shodan, WHOIS, DNS enumeration, and SSL inspection. They identified Google's ASN (AS15169) and a /15 CIDR range covering over 130,000 IPs. The exercise demonstrates how publicly available data can map a target's infrastructure without direct interaction.
Meridian48 take
While the techniques are standard for penetration testers, the article serves as a practical primer for developers and security newcomers on the depth of information exposed by passive recon.
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Passive Reconnaissance on google.com — What I Found Using Shodan, WHOIS, and DNS Tools →
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