Perimeter analysis for website security audit

How to search for information by phone number

How to install ꓘamerka (kamerka)

Danger-zone tutorial (tool to visualize relationships between domains, IPs and email addresses)

How to discover subdomains without brute-force

How to find out hostnames for many IP addresses

How to search subdomains and build graphs of network structure with Amass

TIDoS-Framework: Web Application Information Gathering and Manual Scanning Platform

Open source research with OSRFramework (search by mail, nickname, domain)