On Fri, 4 Jan 2013, Chuck Guzis wrote:
  I'm not saying it's impossible, but all I see
there is a "claim" and
 exactly WHAT version/vendor of CP/M isn't given, nor what the virus does
 as well as its transmission method.
 So, as in "free energy" technology, the evidence seems to be hearsay. 
I agree with Chuck that a BOOT-SECTOR virus would be doubtful for
CP/M, due to the lack of standardization of format.  It could still
have been done for a specific CP/M implementation, such as APPLE CP/M,
Commode 128, Kaypro, Osborne, Superbrain, or maybe even 8"SSSD.  It
would have to be written for a specific one.  Which ones attracted
that mindset?
OTOH, an executable file virus would not be subject to THAT
limitation, and could have been done.
--
Grumpy Ol' Fred                     cisin at 
xenosoft.com