BALTHOR ·
All of the computer files ever written have a zero in a certain location.I suspect that this could be in the header file--where the title of the program--the pertinents are.This might even be by law.The hacker puts a one there--or fax files have a one there.In the BIOS is a virus scanner that looks for this zero.If there is a one there the file gets deleted.If the virus scanner in the BIOS were to be switched on---a CD filled with programs that had virus in them could be read in to the computer and everything would work great.This might be the same for everything with a ROM in it.