Because it is a tool designed to bypass security filters, ultrasurf.exe often lands in a "gray area." Here is what you need to consider:

Understanding Ultrasurf.exe: The Definitive Guide to This Censorship Circumvention Tool

that tunnels your internet traffic through a proprietary network of servers, masking your IP address and bypassing local censorship or network blocks. Key Features No Installation Required

Network administrators are advised that blocking ultrasurf.exe at the network level is an ongoing "cat-and-mouse game" given the software's purpose of defeating network filters. A more reliable approach involves application controls on the desktop:

UltraSurf Security, Privacy & Freedom VPN - Chrome Web Store

: Upon closing, Ultrasurf clears browser history and cookies accumulated during the session.