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check-authentication

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Analyzes PHP code for authentication issues. Detects weak password handling, insecure sessions, missing auth checks, token vulnerabilities.

skills/check-authentication/SKILL.md

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Aug 16, 2026
License
MIT

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# Authentication Security Check

Analyze PHP code for authentication vulnerabilities.

## Detection Patterns

### 1. Weak Password Handling

```php
// CRITICAL: Plain text password storage
$user->setPassword($_POST['password']);

// CRITICAL: Weak hashing (MD5, SHA1)
$hash = md5($password);
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