TERRAIN

Asset Register

The Cyber Terrain Overlay: 39 assets and 4 external actors across 10 terrain layers, weighted and allocated to 5 mission services.

ASOM-Fed v6.1 · Unclassified / Illustrative · agency-agnostic reference framework · built from public sources only

Generated from the published register, the same source the interactive Tower Model reads. Illustrative reference figures for the archetype, not measurements of any agency — substituting real values is the first act of adoption.

The Cyber Terrain Overlay for the Federal Reference Agency archetype: every asset on the terrain, the layer that owns it, whether it is key terrain or a decisive point, and the maneuvers emplaced on it. Defensive Weight is Criticality × Exposure.

Mission services

IDMissionNote
MS-1Public Service DeliveryCitizen-facing intake and status. Statutory availability floor applies.
MS-2Case AdjudicationInternal processing of mission records. The corpus the campaign exists to protect.
MS-3Open Data PublicationPublic data pipelines and open API. Integrity matters more than confidentiality.
MS-4Financial ProcessingFee and payment handling. Fraud-targeted.
MS-5Security OperationsThe defense itself, treated as a mission service because its loss blinds everything else.

T1 · Identity

IDAssetZoneTerrainCritExpWeightManeuvers
A-01ICAM / Policy Decision Point
Brokers every request. Compromise confers control of movement everywhere else.
Identity planeKey terrain · decisive point5420M3 M2 M8
A-02Phishing-Resistant MFA
The control M3's indicator is tested against.
Identity planeKey terrain4520M3
A-03PKI / PIV
Credential issuance and binding root.
Identity planeKey terrain4312M3 M2
A-04Privileged Access (PAM / JIT)
Standing privilege elimination depends on it.
Identity planeKey terrain · decisive point5315M3 M4

T2 · Devices

IDAssetZoneTerrainCritExpWeightManeuvers
A-05Mission-Staff Workstations
EDR-covered fleet. The entry ford for most engagements.
Internal · mission-processing tier3412M2 M4 M7

T3 · Networks

IDAssetZoneTerrainCritExpWeightManeuvers
A-06DDoS Mitigation / CDN
Availability defense at the edge.
TIC 3.0 edge · perimeter3515M1 M6
A-07Web Application Firewall
Request-level inspection tuned to the application.
TIC 3.0 edge · perimeter3515M2 M4
A-08TIC 3.0 Trust-Zone Gateway
Egress control and inspection. Holds several denied paths.
TIC 3.0 edge · perimeterKey terrain4520M4 M2 M8
A-09Load BalancerPublic-facing mission tier2510M2 M6
A-10Microsegmentation Fabric
East-west deny by default. The barrier several reachability results rest on.
Internal · mission-processing tierKey terrain428M4 M8

T4 · Applications and Workloads

IDAssetZoneTerrainCritExpWeightManeuvers
A-11Public Service Portal
Statutory availability floor applies. Cannot be degraded without legal consequence.
Public-facing mission tierKey terrain5525M2 M6 M1
A-12Secondary PortalPublic-facing mission tier3515M2 M6
A-13Case Filing ServicePublic-facing mission tier4520M2 M6
A-14Public Data / Open API
Integrity-critical rather than confidentiality-critical.
Public-facing mission tier2510M2 M5
A-15Case Processing System
The mission workload.
Internal · mission-processing tierKey terrain5315M2 M4 M6
A-16CI/CD Pipeline
Decisive point. Poisoning it envelops everything downstream.
Internal · mission-processing tierKey terrain · decisive point5315M2 M7 M9

T5 · Data

IDAssetZoneTerrainCritExpWeightManeuvers
A-17Sensitive Mission Records
The crown jewel. The objective the campaign exists to protect.
Data tierKey terrain · decisive point5210M2 M5 M6
A-18PII Store
Privacy terrain. Holding more of it is itself the risk.
Data tierKey terrain5210M2 M5
A-19Financial Data
Fraud-targeted.
Data tierKey terrain428M2 M5 M6
A-20Object Storage (S3 Buckets)
Frequent source of incidental and derived holdings.
Data tier339M2 M5
A-21Audit Logs
Retention must exceed plausible dwell or reconstruction cannot reach the entry point.
Data tierKey terrain428M2 M8

T6 · Operational Technology

IDAssetZoneTerrainCritExpWeightManeuvers
A-26Building Management System
Physical-effect system. Cannot be patched or restarted on the defender's schedule.
Operational technology339M4 M2
A-27Physical Access Control System
Bridges T6 and T8. Its telemetry is an intelligence source, not an audit artifact.
Operational technologyKey terrain4312M4 M1
A-28Engineering Workstations
The path by which enterprise compromise becomes physical consequence.
Operational technologyKey terrain · decisive point428M4 M7

T7 · Workforce

IDAssetZoneTerrainCritExpWeightManeuvers
A-29Privileged Administrators
Role, not person. Population size is part of the terrain picture.
WorkforceKey terrain · decisive point5420M3 M2 M7
A-30Mission Caseworkers
Large population with direct access to the record corpus.
WorkforceKey terrain4416M5 M2
A-31Contract Support Staff
Equivalent reach to staff, different lifecycle and vetting.
Workforce3412M3 M8
A-32Approval Authorities
Indirect access role — compromise yields authorization rather than data.
WorkforceKey terrain4312M3 M6

T8 · Facilities

IDAssetZoneTerrainCritExpWeightManeuvers
A-33Primary Data Center
Environmental sustain period must satisfy the recovery objectives of everything housed here.
FacilitiesKey terrain5210M2 M4
A-34Regional Field Offices
Widest physical attack surface, thinnest supervision.
Facilities248M2 M4
A-35Alternate Recovery Site
Must have carried the mission, not merely be documented as able to.
FacilitiesKey terrain414M11 M2

T9 · Supply Chain

IDAssetZoneTerrainCritExpWeightManeuvers
A-36Cloud Service Provider
Inheritance boundary. Customer responsibilities need owners and operational moves.
Supply chainKey terrain5315M2 M8
A-37Managed Service Provider
Reaches production. Severance must be within the agency's own control.
Supply chainKey terrain · decisive point4416M3 M4 M8
A-38Software Build Dependencies
Provenance and contents are different questions and both are required.
Supply chainKey terrain4312M2 M6 M9
A-39Hardware and Firmware Vendors
Where provenance verification is hardest and substitution least visible.
Supply chain326M2 M9

TX · Cross-Cutting

IDAssetZoneTerrainCritExpWeightManeuvers
A-22SIEM / SOC Platform
Visibility & analytics — reconnaissance.
Visibility & automationKey terrain428M1 M7
A-23SOAR Platform
Automation & orchestration — mobility.
Visibility & automation326M7 M8
A-24Threat Intelligence / CISA-JCDC Feed
Feeds M1 and M9. The spoiling attack window depends on it.
Visibility & automation339M1 M9
A-25Hunt Team Tooling
The counterattack force's instrument.
Visibility & automation326M7 M10

EXT · External actors

IDAssetZoneTerrainCritExpWeightManeuvers
X-01Public / Mission Users
External actor. Citizens and businesses.
Internet · external actors05M3 M6
X-02External Partners
External actor. Contractors and other agencies.
Internet · external actors05M3 M4
X-03API / Open-Data Consumers
External actor. Public data pipelines.
Internet · external actors05M2 M6
X-04Threat Actors
Adversary positions: nation-state collection, fraud rings, ransomware crews. Modeled as terrain occupants, not as assets.
Internet · external actors05