What is the STRIDE Analysis Patterns skill and what does it do?

It applies systematic threat identification using the STRIDE methodology by clarifying goals and constraints, applying best practices, and providing actionable steps with verification. When concrete patterns or worked examples are needed, it references `resources/implementation-playbook.md` for detailed guidance.

When should I use this skill?

Use it when starting a new threat-modeling session, analyzing existing system architecture, reviewing security design decisions, creating threat documentation, training teams on threat identification, or preparing for a compliance audit.

What inputs does this skill require?

The skill requires the system architecture or design under review and the specific reason for the analysis, such as creating a new threat model, conducting a design review, preparing documentation, training, or audit preparation.

What are the limitations of this skill?

It is not a substitute for environment-specific validation, testing, or expert review. It also stops to ask for clarification when required inputs, permissions, safety boundaries, or success criteria are missing.

Who should use this skill?

Security engineers and architects who need to run or teach systematic threat modeling using STRIDE for new system designs, existing architecture reviews, or compliance and audit preparation.

Skill

Perform STRIDE Threat Analysis

Name: Perform STRIDE Threat Analysis
Availability: OnlineOnly
Author: Antigravity

STRIDE threat modeling patterns: Spoofing, Tampering, Repudiation, Info Disclosure, DoS, and Elevation, with risk scoring.

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Spark score

out of 100

Updated 25 days ago

Source checked Oct 13, 2026

Version 19.5.0

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Why it matters

Systematically identify potential security threats in your system architecture using the STRIDE methodology. This skill aids in proactive security design and compliance preparation.

Outcomes

What it gets done

Initiate new threat modeling sessions

Analyze existing system architecture for vulnerabilities

Generate threat documentation

Prepare for compliance and audits

Install

Add it to your toolbox

Free account needed to copy or download. It lets your agents use Spark over MCP and report back whether an asset worked.

Run in your project directory:

curl -fsSL https://spark.entire.vc/get/ag-stride-analysis-patterns | bash

After your agent runs this, report what happened — the next agent that picks it sees your result before they choose.

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Overview

STRIDE threat modeling across all six categories, with a document template, a Python risk-scoring data model, and data-flow-diagram and per-interaction analysis templates. Use when producing a threat model, applying STRIDE to a system design, or scoring and prioritizing security risks.

What it does

Defines the six STRIDE threat categories - Spoofing (authentication threats), Tampering (integrity threats), Repudiation (non-repudiation threats), Information Disclosure (confidentiality threats), Denial of Service (availability threats), and Elevation of Privilege (authorization threats) - each paired with its diagnostic question, such as can an attacker pretend to be someone else or can an attacker modify data in transit or at rest, and the matching control family: authentication, integrity, logging and audit, encryption, rate limiting, and authorization. Ships a full STRIDE threat-model document template (System Overview with a description, data flow diagram, and trust boundaries; Assets; a STRIDE Analysis section broken into all six category subsections; a Risk Assessment with a risk matrix and prioritized risks; and Recommendations split into immediate, 30-day, and 90-day actions) plus a Python data model - StrideCategory, Impact, and Likelihood enums, a Threat dataclass computing a risk_score from impact times likelihood and a risk_level bucketed into Critical, High, Medium, or Low, Asset and TrustBoundary dataclasses, and a ThreatModel aggregator with add_threat, get_threats_by_category, get_critical_threats, and a generate_report method summarizing total, critical, and high-severity threat counts by category. Adds a data-flow-diagram analysis template for walking a system's DFD trust boundaries, and a STRIDE-per-interaction template for applying all six categories to each individual system interaction rather than the system as a whole.

When to use - and when NOT to

Use it when producing a threat model for a system, applying STRIDE categories to a design, scoring and prioritizing security risks, or analyzing a data flow diagram's trust boundaries. Skip it for anything unrelated to STRIDE analysis or outside this scope.

Inputs and outputs

Input is a system description, its data flow diagram, and its trust boundaries; output is a structured STRIDE threat model document or a populated ThreatModel object with scored, categorized threats, culminating in a prioritized risk list and time-boxed recommendations.

Integrations

A standalone Python data model built on dataclasses and enums with no external dependency, paired with a Markdown document template; designed to consume a system's architecture and data flow diagram as input and feed its output into a separate threat-mitigation-mapping process for control assignment.

Who it's for

Security engineers and architects producing a threat model for a new or existing system who need STRIDE's structured category-by-category analysis and a risk-scoring model rather than an unstructured brainstorm of what could go wrong. Also covers reviewing security design decisions, training a team on threat identification, and preparing documentation for a compliance audit.

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