What is network security?

Network security refers to the measures and protocols implemented to protect the integrity, confidentiality, and availability of computer networks and data. This protection encompasses a variety of technologies, policies, and practices designed to guard against unauthorized access, attacks, and data breaches. The focus of network security is to ensure that sensitive data and resources are safeguarded while maintaining the proper functioning of the network.

In contrast, options that involve attracting more users, providing internet access, or creating social networks do not address the fundamental principles of network security. Attracting users may increase network activity but does not inherently enhance security. Providing internet access is a function of network operation, not protection. Similarly, creating social networks is more about fostering communication and engagement rather than establishing protective measures against threats to network integrity and data security. Therefore, the emphasis on protecting data integrity and confidentiality is what makes the chosen answer the correct one.