recently i noticed in my server log that there is a post that someone has downloaded a file.
20.03.2016 22:09:03 VirtualServerBase Info file download from (id:0), '/icon_2379257560' by client 'TeamSpeakUser'(id:22964)

this came more than one time across my log. and i dont want that. it bothers me that someone is downloading files from my ts.
can someone explain me what this post means ?