I opened the Dropbox icon that appears in the hidden icons section of the taskbar and found a file that I did not recognize. It was an .exe file! I tried several times over several days to delete the file but the only option I was offered was to "open" the file. When I "open" this file Dropbox says it uploaded by someone I don't recognize but appears to be related to program I occasionally run.
How do I get rid of this file.