Security

Essential security concepts and best practices for web development.

Why Security Matters

Security protects your applications, data and users from malicious attacks and unauthorised access.

Common Security Threats

Cross-Site Scripting (XSS)

Malicious scripts injected into web pages.

SQL Injection

Malicious SQL code inserted into application queries.

Cross-Site Request Forgery (CSRF)

Unauthorized commands transmitted from a user that the application trusts.

Man-in-the-Middle Attacks

Intercepting communication between two parties.

Security Best Practices

Authentication

• Use strong password policies
• Implement multi-factor authentication
• Use secure session management

Data Protection

• Encrypt sensitive data
• Use HTTPS for all communications
• Implement proper access controls

Input Validation

• Validate all user inputs
• Sanitize data before processing
• Use parameterized queries

Regular Updates

• Keep software up to date
• Apply security patches promptly
• Monitor for vulnerabilities

Security Tools

• SSL/TLS certificates
• Web Application Firewalls (WAF)
• Security scanners
• Penetration testing tools