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security-first-design

Evaluate security risks across architecture, code reviews, and feature planning.

8|Updated Nov 4, 2025
Search Tags:#design#OWASP#security#authentication#vulnerability#threat modeling#data protection
One-click install
npx skills add https://github.com/ilude/claude-code-config --skill security-first-design
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: security-first-design
Source: https://github.com/ilude/claude-code-config/tree/main/skills/security-first-design
Command: npx skills add https://github.com/ilude/claude-code-config --skill security-first-design

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

This Skill systematically evaluates and mitigates security risks early in the design phase, preventing vulnerabilities from being introduced into new features or systems. It significantly reduces the cost and effort of fixing security issues later by addressing them proactively.

Core Features & Use Cases

  • Five-Phase Security Analysis: Guides through attack surface mapping, threat modeling, secret management audit, input validation design, and a final security checklist, ensuring comprehensive coverage.
  • OWASP Top 10 Integration: Explicitly reviews common web application security risks like injection, broken authentication, and sensitive data exposure, aligning with industry standards.
  • Proactive Risk Mitigation: Ensures secrets are handled correctly, input is rigorously validated, and the principle of least privilege is applied, building security into the core design.
  • Use Case: You're designing a new user authentication service. This skill will guide the AI to perform a thorough security review, identifying potential attack vectors, ensuring proper secret management, and recommending robust input validation, making your service secure by design and saving you from future breaches.

Quick Start

Apply the security-first-design skill to my proposed authentication system. Focus on attack surface mapping and secret management.

Frequently Asked Questions about security-first-design

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I evaluate security risks in my software design?▼

Security risk evaluation systematically identifies vulnerabilities across authentication, authorization, API security, and input handling by mapping attack surfaces, modeling threats, auditing secret management, and validating input design before vulnerabilities reach production.

What does threat modeling accomplish in architecture and code reviews?▼

Threat modeling identifies attack vectors and potential exploits by analyzing system design, data flows, and trust boundaries. It reveals where secrets are exposed, authentication fails, or user input bypasses validation, enabling proactive mitigation.

How do I align my design with OWASP Top 10 security standards?▼

OWASP Top 10 integration reviews your design against injection, broken authentication, sensitive data exposure, and other common vulnerabilities. Applying this Skill ensures your architecture and code address industry-standard risk categories.

What's the best way to manage secrets in a new authentication service?▼

Secret management audit evaluates how credentials, API keys, and tokens are stored, transmitted, and accessed. The Skill guides you through identifying exposure points and implementing least-privilege handling before deployment.

Can I use input validation design to prevent injection attacks?▼

Input validation design specifies sanitization, type checking, and filtering rules to block injection attacks at entry points. This Skill ensures validation logic is integrated early into feature planning and code architecture.

Do I need attack surface mapping before designing authentication systems?▼

Attack surface mapping identifies all potential entry points, trust boundaries, and data flows in your system. This prerequisite analysis reveals where unauthorized access, secrets exposure, or injection risks exist before detailed design.

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