Proxy servers refer to dedicated computer systems or software systems that act as intermediaries between endpoint devices (computers, mobile devices etc) and servers. Such proxy servers may exist in the very same systems that host firewall servers or may even be in separate ones. Without proxy servers, hackers would be able to dig into the data stored on the cloud and misuse it in many ways. You need to be extra careful while using a proxy server, get to know the one that you are going to use before using it.”]
Source: https://hackercombat.com/how-to-use-proxy-servers-to-protect-your-device-and-data/