Swarm

Swarm is anti-IC/anti-system program activated as a single, Strength 1 program. Once it successfully penetrates the CPU of a target system, it starts reproducing! Its subroutines will cause the target deck 's RAM to make a duplicate of Swarm each round-under your control! The original will continue to duplicate until destroyed, eventually engulfing the CPU with sheer force of numbers. If the original program is destroyed, you can "re-launch" one of the duplicates to continue the process.

Options: Endurance, Re-rezz

Source

 * Chromebook Volume 4, pg.52