STRIDE Threat Model Framework

Map IoT data flows to STRIDE threat categories, evidence, and mitigations

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A standalone STRIDE threat-modeling lab with six threat categories, IoT deployment presets, data-flow lens controls, phase playback, synchronized diagram highlights, evidence and mitigation cards, technical accuracy notes, common misreads, practice prompts, and desktop/mobile visual checks.
STRIDE Threat Modeling IoT Security

STRIDE Threat Model Framework

Turn an IoT data-flow diagram into six concrete threat questions: spoofing, tampering, repudiation, information disclosure, denial of service, and elevation of privilege.

Spoofing Selected category
Authentication Security property
Verify identity Mitigation goal
Medium Residual risk

STRIDE threat-model controls and evidence outputs

Spoofing: sketch the system

Start with the identity path between a field device, gateway, cloud service, and operator.

Trust boundary
Door sensor field device
Home hub local broker
IoT cloud rules + API
Operator device identity
Audit and policy mTLS identity
asset
Spoofing asks who this is

Threat Card

A device or user pretends to be another trusted identity.

QuestionCan identity be faked?
AssetDevice identity
BoundaryDevice to hub

Analysis Trace

1
Authentication pressureThe category points to one violated security property.
2
Evidence neededFind a log, protocol check, or test that can prove the issue.
3
Control selectedChoose a mitigation that directly protects the property.

Threat Record

Record the threat as a category, affected data flow, evidence, mitigation, and owner.

EvidenceUnknown certificate
MitigationUnique device identity
OwnerPlatform team

Playback

Step through a threat-modeling pass for the selected STRIDE category.

STRIDE Category

Pick the threat category, then inspect the property and control mapping.

Category

IoT Scenario

Threat questions change when the asset and boundary change.

Deployment

Control Depth

Compare a weak baseline with mapped and layered mitigations.

Control set

What To Watch

  • One property per category: STRIDE is useful because each category points to a security property.
  • Boundaries matter: threats usually appear where identity, data, code, or authority crosses trust.
  • Evidence before fixes: a good threat record names what would prove the issue is present.

Technical Accuracy Notes

  • Spoofing maps to authentication; elevation maps to authorization. They are related but not the same failure.
  • Repudiation is about accountability and audit evidence, not simply whether an event happened.
  • Denial of service is an availability threat; encryption alone does not solve resource exhaustion.

Practice Prompts

  1. Select Repudiation and explain why signed audit records help.
  2. Select Elevation of privilege and separate it from spoofing.
  3. Switch to Layered controls and identify what residual risk remains.
Common Misreads

"STRIDE is a list of attacks" is too narrow. STRIDE is a prompt set for asking threat questions against assets, flows, and trust boundaries.

"One control fixes one letter forever" is also incomplete. Threat models need owners, assumptions, evidence, and periodic review as deployments change.