By default Windows ships set so common file extensions do not show up in Windows Explorer. So, the executable file PROGRAM.EXE would show up as just PROGRAM in Explorer. So, if a virus wanted to try to trick you it might name it's file with a double ext VIRUS.TXT.EXE. In the Windows default, this file would show up as VIRUS.TXT and you might be confused and think it's a harmless text file instead of an executable program. You should change the Windows default so that common file extensions show up rather than remain hidden. |
