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Subdomain proliferation is one of the leading causes of security incidents, creating opportunities for subdomain takeover and unmanaged test systems.

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Discovery Workflows

  1. Root Domain Registration: Input organization apex domains (e.g., snapsec.co, acmepayments.com).
  2. Recursive Enumeration: Snapsec recursively queries horizontal and vertical subdomains.
  3. Live Resolution Verification: Validates whether DNS records resolve to active IPs or return NXDOMAIN.
  4. Takeover Detection: Flags dangling CNAME pointers pointing to unclaimed cloud buckets (AWS S3, Azure Blob, GitHub Pages, Heroku).