In which situation might a user be advised to use a proxy server?

Using a proxy server is particularly beneficial for enhancing security and performance. When a user connects to the internet through a proxy server, their requests are routed through the server before reaching the destination website. This can provide several advantages, such as masking the user's IP address, which enhances privacy and security by making it more difficult for external parties to track online activities. Additionally, proxy servers can cache frequently accessed web content, which speeds up loading times for users. This caching capability improves overall performance by reducing the amount of bandwidth required to access the same data multiple times.

In summary, utilizing a proxy server primarily focuses on boosting security by anonymizing connections and optimizing performance through efficient data management.