Application Security In-Depth

Introduction

Application security is a vast and complex field.

Main Vulnerabilities

OWASP Top 10

1. Broken Access Control: Inadequate access control
2. Cryptographic Failures: Failures in cryptographic implementation
3. Injection: Injection of malicious commands
4. Insecure Design: Insecure design from the start

Security Practices

1. Input Validation

function validateInput(input) {
  // Validate and sanitize input
  return sanitize(input);
}

2. Authentication & Authorization

Always implement strong authentication and role-based access control (RBAC).

3. Dependency Management

Keep your dependencies updated:

npm audit
npm audit fix

DevSecOps

Integrate security from the beginning of development:

• Security-focused code reviews
• Static Application Security Testing (SAST)
• Dynamic Application Security Testing (DAST)
• Automated security testing

Conclusion

Security is not a feature, it's a responsibility.