Incubator

Rache Bartmoss claims to have coded this nasty super-virus.
Incubator is technically a daemon, in that it lives inside a foreign system and does its work on that system's time. The difference is that Incubator doesn't do any direct work, it reproduces other programs.
So what's the difference between this and Cockroach, or Gremlins? Incubator doesn't reproduce itself, it copies and produces other programs, including other daemons! (Although that auto re-rezz option makes Incubator hard to kill.) Before Incubator is planted within a target system, the user specifies what programs it is to multiply—this can be any program the user plants in the system, then or later (identified by a particular code), or just one or two specific programs, or any other program Incubator can grab and copy ... it's pretty open-ended, which is why specific orders must be given.
Incubator's most common use is to riddle a system with spy programs. It goes like this: Incubator and a spy program (Eavesdropper, Boardwalk, Deep Thought, etc.) are infiltrated into a target system. Whenever Incubator is given processing time, it copies the spy program. The spy has been pre-programmed with a hierarchy of system locations to infiltrate; as more spies are produced, they gradually fill up the designated assignments.
Because it usually runs infrequently, Incubator is hard to find. A dormant Incubator and a paired daemon can make a "time bomb" for future use.
Options: Pseudo-intellect, Movement, Auto Re-rezz; Re-rezz subroutine 
== Source ==
* Rache Bartmoss Brainware Blowout, pg.85
Category:Cyberpunk 2020 Programs