Anonymous proxy servers are meant to hide the identity of the requestor. Some security experts say the latter is only necessary if someone wants to mask malicious activity. Others say certain kinds of security research and testing make them a necessity. CSOonline polled several industry professionals by phone, e-mail and networking sites like LinkedIn. Most respondents defended the use of anonymous proxy servers and offered a litany of legitimate-use examples. But everyone admits they can easily be used for malicious purposes and that organizations must respond with the right security procedures.”]
Source: https://www.csoonline.com/article/2123312/anonymous-proxy-servers–necessary-or-evil-.html