Clearly define the scope of your security audit. Identify all the components, services, and systems associated with your website that need to be assessed.
Ensure that your web server is securely configured. Review server settings, permissions, and access controls. Disable unnecessary services and features.
Keep all software, including the web server, content management system (CMS), plugins, and other components, up to date. Regularly check for security patches and updates.
Validate and sanitize all user inputs to prevent common web vulnerabilities such as SQL injection, cross-site scripting (XSS), and cross-site request forgery (CSRF).
Conduct penetration testing to simulate real-world attacks. Hire a professional penetration tester to identify and exploit potential vulnerabilities.