How does user authentication strengthen network security?

User authentication, such as biometrics or passwords, enhances network security by ensuring that only authorized users can access the network or specific resources within the network. This layer of security helps prevent unauthorized access, data breaches, and other malicious activities. Biometrics, such as fingerprint or iris scans, provide a high level of security as they are unique to each individual and are difficult to replicate. Passwords, on the other hand, add an additional layer of security as users have to provide something they know to authenticate themselves. By combining these methods, organizations can create multi-factor authentication systems that significantly boost network security.