Security Headers definition in Cybersecurity

Security Headers are HTTP response headers that, when properly configured, can help mitigate various attacks and security vulnerabilities in web applications. They instruct browsers on how to behave when handling a site's content, enhancing security by preventing attacks such as clickjacking, cross-site scripting (XSS), and other code injection attacks.

Open source or Free solutions

1. ModSecurity (for Apache, Nginx, and IIS)
2. OWASP Secure Headers Project

Paying solutions

1. Cloudflare
2. Akamai