In the beginning of 1994, a new author entered the stage. Calling
himself MnemoniX, this American virus writer proudly presented a
new generator called MutaGen.
At the moment, there are four different versions of MutaGen in
distribution. Each successive version is more complex than the
previous ones. Their sizes range from 1032 bytes to 1385 bytes.
In MutaGen's documentation, MnemoniX criticizes the other
polymorphic generators for being too unreliable and easy to
MnemoniX himself has published two different viruses which
utilise the MutaGen generator, but otherwise the response of the
virus underground to this new generator is unknown.