David Rothberg works for BFEX (Beijing Future Exchange). This is a fake company. Connected to Hesketh-Leihner in Hong Kong which is connected to Zenton LTD Hong Kong. This is fraud.
Company called to say they were from Microsoft and my computer IP# came up as downloading files that were junk or virus...asked me to open my computer and they would help go through and delete these files. I let him know I would talk to my computer pro about "the problem".