For  centuries, miners  have brought  a canary  down into  the mines with
    them.   They do not do this for the  company or for the music; they do it
    because  a canary will die  from small amounts of  deadly gasses prior to
    the  miner feeling adverse effects.   Installed and used properly, The PC
    Canary  may  become infected  by  a computer  virus  and give  you enough
    warning to eradicate the virus and recover before serious damage is done.

    The PC Canary is a passive virus detector which gives an alarm when it or
    its  data file becomes  infected.  The  PC Canary scans  for all types of
    computer  virus that infect your command processor, .exe programs or .dat
    files,  ie., virtually all viruses.   It is able  to scan itself even for
    viruses  that haven't been  written yet, since it  detects the effects of
    the virus, rather than the virus itself.

    The  PC Canary is  ShareWare.  The files  "Canary.exe" & "Canary.dat" are
    necessary for installation; please see the detailed internal instructions
    (run the program and press the [F1] key) for installation considerations.

    PC Canary is easy to install and does not modify any files other than its
    data file.  This allows you to use this program in conjunction with other
    security  programs.  It will automatically adjust for DOS changes, and so
    will not report a problem in COMMAND.COM when you upgrade DOS.