What is a primary benefit of using encryption in web security?

Using encryption in web security significantly enhances the protection of sensitive data from unauthorized access. Encryption transforms readable data into an encoded format that can only be deciphered by those who possess the correct decryption key. This process is critical in safeguarding information, especially in scenarios where data might be intercepted during transmission or stored in vulnerable systems.

Web security relies on encryption to maintain privacy and confidentiality, making it vital for personal data, financial information, and any sensitive communications. The effectiveness of encryption in preventing unauthorized users from obtaining and exploiting data is why it is considered a fundamental aspect of security protocols such as HTTPS, which secures communications over a computer network.

The other options presented do not align with the core purpose of encryption. While speed, authentication, and visual encryption may relate to various aspects of information technology, they do not represent the primary advantage that encryption provides in the context of web security.