('binary' encoding is not supported, stored as-is) Mailer: SecurityFocus

Is it possible for a virus to infect a jpeg (*.jpg) file,
then the jpg file to infect other files?...without
changing the files characteristics? In other words, a
jpeg file (file.jpg) is infected and it
remains "infected_file.jpg". It is possible for a file type
as jpeg to have a payload or cause damage although
it's just being viewed? Perhaps something like
steganagraphy...except embedding vbs (or
something) causing infection by way of the viewer? I
guess another way of asking the question is:

Is it possible to get infected by just viewing jpeg files?

I realize that's a "wide open question" I just don't
know how else to explain myself. Thanks in advance
for your patience and help.

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