And from Control and Monitor Tor
Am I compromised? Does Arm report leaks?
Arm is conceptually not a tool to find out about serious issues such as compromise or leaks. [3]
Arm works on a different level. It is a Tor Controller. It talks to Tor using Tor’s ControlPort. It is an interface to show what Tor thinks. Neither Tor nor Arm implement anything such as virus detection, compromise detection, leak detection etc. Messages by Arm are interesting and useful but usually no reason for grave concern. For leak testing, see leak tests.