---
title: ToolRouter — Use Case
description: Step-by-step guide for a real-world ToolRouter use case with agent-specific instructions.
url: https://toolrouter.com/tools/pentest/use-cases/scan-auth-weaknesses
---
# Scan for Authentication Weaknesses

Authentication is the front door to your application. Weaknesses in login systems, password policies, session management, or token handling can give attackers direct access to user accounts. Broken authentication is consistently one of the most exploited vulnerability categories because it provides immediate, high-value access.

Authentication security testing checks for a broad range of issues: weak password policies that allow common passwords, missing brute force protection, predictable session tokens, insecure password reset flows, missing multi-factor authentication, and token handling vulnerabilities like JWT algorithm confusion or missing expiration.

Every application with user accounts needs authentication testing. Even well-known authentication libraries and frameworks can be misconfigured. A secure login form means nothing if the session token is predictable, the password reset email contains the new password in plaintext, or the JWT secret is a common word. Systematic testing of every authentication flow is the only way to be confident in your security posture.

**Tool:** [Pentest](https://toolrouter.com/tools/pentest)
**Skills:** scan_vulnerabilities

## Agent Guides

- [How to Scan Auth Weaknesses with Claude](https://toolrouter.com/tools/pentest/use-cases/scan-auth-weaknesses/claude): Guide for Claude
- [How to Scan Auth Weaknesses with ChatGPT](https://toolrouter.com/tools/pentest/use-cases/scan-auth-weaknesses/chatgpt): Guide for ChatGPT
- [How to Scan Auth Weaknesses with Copilot](https://toolrouter.com/tools/pentest/use-cases/scan-auth-weaknesses/copilot): Guide for Copilot
- [How to Scan Auth Weaknesses with OpenClaw](https://toolrouter.com/tools/pentest/use-cases/scan-auth-weaknesses/openclaw): Guide for OpenClaw
