Network security is essential for safeguarding data and systems from unauthorized access, attacks, and disruptions. It ensures that communication within and outside an organization remains safe and reliable.

Network security involves technologies, policies, and practices designed to monitor, prevent, and respond to threats targeting computer networks. This includes firewalls, intrusion detection systems, encryption, and access controls that protect against cyberattacks such as malware, phishing, and unauthorized intrusions. Effective network security reduces risks, safeguards sensitive information, maintains system integrity, and supports regulatory compliance. It is a foundational layer of cybersecurity that enables organizations to operate confidently in an interconnected digital environment.