Khadem Logo
Khadem BETA

Security Best Practices

Comprehensive security guidelines and best practices for building secure Khadem applications.

Authentication Security

Security Risks

  • Plain text password storage
  • Weak password policies
  • Session fixation attacks
  • Brute force attacks
  • Token leakage

Security Measures

  • Strong password hashing (bcrypt/Argon2)
  • Multi-factor authentication
  • Secure session management
  • Rate limiting
  • JWT token security

Input Validation & Sanitization

Validation Rules

  • required - Field must be present
  • email - Valid email format
  • min:X|max:X - Length constraints
  • numeric|alpha|alphanum - Character restrictions
  • unique:table,column - Database uniqueness
  • regex:pattern - Custom regex validation

SQL Injection Prevention

ORM Security Features

  • Automatic query parameter binding
  • Prepared statements
  • Input sanitization
  • SQL escaping
  • Query builder protection

Cross-Site Scripting (XSS) Protection

XSS Prevention Methods

  • Auto-escaping in templates
  • Content Security Policy (CSP)
  • Input sanitization
  • Output encoding
  • Secure cookie flags

CSP Headers

  • default-src 'self'
  • script-src 'self' 'unsafe-inline'
  • style-src 'self' 'unsafe-inline'
  • img-src 'self' data: https:

CSRF Protection

CSRF Protection Methods

  • CSRF tokens in forms
  • SameSite cookie attributes
  • Origin header validation
  • Custom headers for AJAX requests
  • Double submit cookie pattern

File Upload Security

Security Checks

  • File type validation
  • File size limits
  • MIME type verification
  • Virus scanning
  • Secure filename generation
  • Storage outside web root

API Security

Authentication

  • API key authentication
  • OAuth 2.0 / OpenID Connect
  • JWT tokens
  • Rate limiting
  • Request signing

Security Headers

  • Content Security Policy
  • X-Frame-Options
  • X-Content-Type-Options
  • Strict-Transport-Security
  • X-API-Key validation

Rate Limiting

Rate Limiting Strategies

  • Fixed window algorithm
  • Sliding window algorithm
  • Token bucket algorithm
  • Leaky bucket algorithm
  • Distributed rate limiting with Redis

Environment Security

Environment Variables

  • Never commit secrets to version control
  • Use environment-specific configuration
  • Validate required environment variables
  • Use secret management services
  • Rotate secrets regularly

Security Monitoring

Monitoring Features

  • Failed login attempt tracking
  • Suspicious activity detection
  • Security event logging
  • Real-time alerts
  • Security report generation
  • Compliance auditing

On this page