MGT Capital Investments, Inc. announced the appointment of Gary Miliefsky to its Emerging Large Scale Systems Advisory Board, and Vinny Troia to its Hacker Advisory Board, effective immediately. Miliefsky is the CEO of SnoopWall, Inc. and co-inventor of its innovative breach prevention technologies. Troia is CEO of Night Lion Security. Prior to founding Night Lion he worked for seven years as a security consultant with the US Department of Defense.