/org-attack-surface

name: org-attack-surface
description: "Org-grade attack-surface mapping: given a company's legal identity, discover its ENTIRE owned internet footprint — corporate family -> owned domains -> owned netblocks/ASN -> live assets — with attribution discipline, not just DNS breadth. The org-first attribution pyramid (legal entity -> LEI/registration -> corporate family -> owned domains -> owned netblocks/ASN -> live assets). Corporate-identity resolution via the GLEIF LEI API (legal name -> LEI, exact-LEI direct-children expansion, downward-only depth-capped BFS, NEVER a name re-resolution), SEC-EDGAR full-text search + Exhibit-21 subsidiary entity names, OpenCorporates entity corroboration, Wikidata SPARQL corporate graph (P856/P355/P749/P1830). Domain attribution via reverse-WHOIS (WhoisXML preview-then-purchase quota guard, SecurityTrails associated-domains — both paid), crt.sh O= certificate-transparency organization pivot (keyless), infrastructure correlation (shared NS/MX/SaaS-TXT, netblock membership, reverse-DNS PTR), and the independent-evidence combiner (1-prod(1-w_i), rule of three, OwnerTier NONE/WEAK/MODERATE/STRONG/CONFIRMED) — discover-only `related:` candidates are NEVER auto-scanned. Netblock/ASN attribution via org-first RIR queries (ARIN Whois-RWS org-handle search, RIPE DB organisation + inverse-org search) that recover 'dark netblocks' with no DNS link to the seed, ASN discovery (RIPEstat + BGPView union), the HYPERSCALER-SCOPE GUARD (never attribute a whole AWS/GCP/Azure/Cloudflare announced range to a tenant — keep only the seed-containing block, tag shared_hosting_cdn), and org-identity-seeded internet-scan-index queries (Shodan/Censys/ZoomEye/FOFA/BinaryEdge org: filters + an always-on keyless crt.sh fallback). Promote-to-scan triage ranks forgotten discover-only netblocks by remote-access exposure (gateway-vendor/KEV/control-plane/datastore port scoring) into an operator queue. Attribution confidence rubric + anti-patterns (namesake grafting via GLEIF name re-resolution, single-signal ownership, hyperscaler over-attribution, privacy-WHOIS pivot poisoning, RIR org-name collisions). Passive/keyless-first OSINT only — every paid-key dependency is enrichment on top of a keyless core, never a hard requirement. Use when mapping an organization's full corporate-family internet footprint, resolving a legal entity to its LEI/subsidiaries, discovering domains/netblocks/ASNs an org owns beyond its one seed domain, auditing M&A/shadow-IT sprawl, or scoping an engagement that starts from a company NAME rather than a domain."
version: 1.0
sources: asm_reference_impl, gleif, public_research
triggers:
  - org attack surface
  - organization attack surface
  - org footprint
  - corporate footprint
  - corporate family
  - corporate family mapping
  - corporate family tree
  - subsidiary discovery
  - subsidiary attack surface
  - subsidiary mapping
  - GLEIF
  - LEI lookup
  - legal entity identifier
  - legal name to LEI
  - EDGAR subsidiary
  - SEC EDGAR
  - Exhibit 21
  - 10-K subsidiaries
  - OpenCorporates
  - Wikidata corporate graph
  - reverse WHOIS
  - reverse whois pivot
  - crt.sh organization search
  - crt.sh O=
  - certificate transparency org pivot
  - CT org pivot
  - dark netblock
  - org-first RIR search
  - ARIN Whois-RWS
  - ARIN org search
  - RIPE DB search
  - RIPE organisation search
  - RDAP entity search
  - ASN discovery
  - BGPView
  - RIPEstat
  - hyperscaler scope guard
  - cloud netblock over-attribution
  - shared hosting CDN attribution
  - AWS netblock attribution
  - M&A footprint
  - M&A attack surface
  - shadow IT discovery
  - promote to scan
  - discover-only candidate
  - org identity resolution
  - corporate identity resolution
  - owned netblock discovery
  - owned ASN discovery
  - org index search
  - outward identity search
  - identity-seeded discovery
  - attribution confidence
  - ownership tier
  - owner signal
  - independent evidence combiner
  - rule of three attribution
  - namesake grafting
  - org tree walk
  - subsidiary entity pivot
  - registrant org pivot
  - WHOIS privacy pivot
  - Shodan org filter
  - Censys organization filter
  - company name to attack surface

Org Attack Surface — Corporate-Family Footprint Mapping

> Companion skills: [`osint-methodology`](../osint-methodology/) (the "how to think" 5-stage recon > pipeline this plugs into) and [`offensive-osint`](../offensive-osint/) (the per-host arsenal you run > once this skill hands you owned domains/netblocks — see its §14 Public Records and §28 Infrastructure > OSINT for the tool directory this skill deepens rather than duplicates). This skill answers a > different, upstream question: **not** "what does `acme.com` expose", but "what does **Acme > Corporation, the legal entity**, own across every domain, netblock, and subsidiary it has — including > the parts with no DNS trail back to the seed at all."

0. When to Use / When NOT

**Use this skill when:**

• The engagement starts from a **company name or legal entity**, not a domain — you need to derive

the domain(s) first, not just enumerate one.

• You need to find an org's **subsidiaries, sister brands, or M&A-acquired footprint** that a

DNS/CT-only sweep of one seed domain would never surface.

• You suspect **"dark" IP space** — netblocks or ASNs registered to the org's legal entity with

no DNS record pointing at them (forgotten datacenter allocations, un-linked M&A infrastructure, IPs that only ever ran raw services).

• You need **attribution discipline**: every candidate domain/netblock/ASN this skill surfaces

carries an explicit, auditable ownership score — never a bare "looks related."

• You are scoping a large or conglomerate engagement and need to prune scope by real corporate

ownership before spending recon budget on strangers.

**Do NOT use this skill when:**

• You already have a confirmed, bounded target list and just need per-host recon — go straight to

`offensive-osint`. -