Tools / Pentest / Use Cases / Scan for Authentication Weaknesses / Claude

How to Scan Auth Weaknesses with Claude

Test authentication security with Claude and ToolRouter. Find login and session vulnerabilities.

Claude transforms penetration testing into a conversational security review where each discovered vulnerability leads to deeper investigation. Ask Claude to scan your application, explain each finding in context, chain additional targeted tests based on initial results, and generate remediation code for every issue found. Its analytical depth is ideal for security-conscious developers who want to understand not just what is vulnerable but why and how to fix it permanently.

Connect ToolRouter to Claude

1Go to Settings → Connectors → Add custom connector

2Enter the details below and click Add

Name

ToolRouter

URL

https://api.toolrouter.com/mcp

3Done — works on Claude chat, desktop, and mobile

Steps

Once connected (see setup above), use the Pentest tool:

Ask Claude: "Scan the authentication system of my app for weaknesses using pentest" and provide the URL
Claude tests login flows, session management, and token handling
Review findings covering password policies, brute force protection, and session security
Strengthen authentication based on the recommendations

Example Prompt

Try this with Claude using the Pentest tool

Test the authentication system at https://staging.myapp.com. Check the login form, password reset flow, session tokens, and JWT implementation for weaknesses.

Tips

Ask Claude to test both the happy path and edge cases in authentication flows
Request specific configuration changes for your auth library to fix each issue
Test password reset and account recovery flows separately -- they are often weaker than login

More Claude Guides

How to Scan Web App Vulnerabilities with Claude How to Test API Security with Claude How to Check SQL Injection with Claude How to Test XSS Exposure with Claude How to Test CORS Security with Claude

Related Workflows

Full Security AssessmentComprehensive security assessment combining infrastructure probing, vulnerability scanning, penetration testing, and CVE intelligence.Compliance Security AuditAudit systems against compliance frameworks using automated scanning, vulnerability checks, auth testing, and research.Web Application Security TestCrawl a web application, analyze HTTP security, test for injections, and document findings with screenshots.Network ReconnaissanceMap the complete network attack surface through DNS enumeration, geolocation, service probing, and attack vector analysis.API Security TestingTest API endpoints for authentication flaws, injection vulnerabilities, and compliance with OWASP API Security Top 10.Cloud Security AuditAudit cloud infrastructure by discovering assets, probing for misconfigurations, testing cloud-specific attacks, and checking CVEs.Third-Party Risk AssessmentAssess third-party vendor security through identity verification, external security probing, attack surface analysis, and breach history.