What aspect of security does a VPN primarily enhance?

A VPN, or Virtual Private Network, primarily enhances data confidentiality. When using a VPN, your internet connection is secured through encryption, which means that the data transmitted between your device and the VPN server is scrambled and difficult for unauthorized users to intercept or decipher. This encryption protects sensitive information from eavesdroppers, especially on unsecured networks such as public Wi-Fi.

By encrypting the data, a VPN ensures that only the intended parties can access the information, maintaining privacy during data transmission. While aspects like data integrity, availability, and redundancy are important in security, they are not the main focus of what a VPN provides. Data integrity refers to ensuring that information remains accurate and unaltered, which is typically managed through different techniques such as hashing. Data availability relates to ensuring that resources are accessible when needed, and data redundancy involves keeping backup copies of data to prevent loss. While these elements are crucial for comprehensive security, the primary function of a VPN is to secure the confidentiality of the data being transmitted over potentially insecure networks.