What is xpcproxy?
Xpcproxy – a part of Mac system files that may be connected to malware. It is reported to be a virus. The XPC proxy is a system component which allows applications to communicate and integrate with each other. macOS uses its built-in XPCProxy tool to spawn new services. In my case, it was nsurlsessiond (by sudo lsof | grep -i nsurl ). XPC Proxy seems to be a system file having to do with the malware system on a mac.