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Amass

Recon / OSINT · Intermediate

Map an organization's external attack surface via subdomain enumeration.

Knowledge reference only. Prefer in-browser Labs first. Use this tool only on systems you own or have written authorization to test.

What to learn

  • Passive vs active
  • Data sources
  • Graph output

Legitimate use

Amass is used legitimately by security teams for authorized testing, defense validation and education.

Official docs →

Example commands (lab VMs only)

  • amass enum -passive -d example.com
    Passive enumeration of a domain you are authorized to assess