Create a very specific virus that remains dorment on all conditions except for those with emulators and roms.
If the virus doesn't attack the main populous (say microsoft office users) then it may not be important enough to fix.
Also, the virus can possibly be attached to roms themselves and uploaded to places like mame.dk to spread quicker.
If the virus doesn't attack the main populous (say microsoft office users) then it may not be important enough to fix.
Also, the virus can possibly be attached to roms themselves and uploaded to places like mame.dk to spread quicker.