Which of the following statements about public Wi-Fi is true?

Using public Wi-Fi can expose users to various security risks, primarily due to the open nature of these networks. The statement that one should avoid using sensitive sites while connected to public Wi-Fi is crucial for maintaining personal security. When on public networks, encryption and protection measures may not be adequate, making it easier for attackers to intercept sensitive data, including usernames, passwords, and financial information.

Avoiding sensitive sites—such as banking or other financial services—is wise because these typically require user credentials and provide access to sensitive information that could be misused if intercepted by malicious actors. Acknowledging the limitations of security on public networks allows users to take proactive steps to protect their data.

In contrast, the other options present misconceptions about public Wi-Fi security. It is not entirely secure, nor is it safe to assume that any site is secure under these conditions. Additionally, there is no restriction on using public Wi-Fi solely during work hours; it can be accessed any time, though caution should always be exercised regardless of the hour.