System engineering is an interdisciplinary field focused on designing, integrating, and managing complex systems throughout their life cycles. In cybersecurity, system engineering ensures that security is embedded into every stage of system development, from initial requirements to deployment and maintenance. This approach helps organizations anticipate vulnerabilities, implement effective controls, and maintain system resilience against evolving threats. System engineers collaborate with stakeholders to balance technical, operational, and security requirements, ensuring that systems are robust, scalable, and secure. By applying holistic thinking, system engineering reduces risks and improves the overall effectiveness of cybersecurity measures.