Black Sky

Black Sky is stealth/evasion/anti-IC program developed by the Net-terrorist known only as Ware Wolf, this complex combat software uses mutable shells which shuffle processing rockets, interference subroutines and a self-replicating data attack. When launched, Black Sky peppers the local system with code which protects the netrunner from detection and attack (Stealth and Evasion functions). Once those functions have run, Black Sky's processing rockets boost the speed of the 'runner's deck and jump immediately into attack mode, injecting a data spike into the attacking program, de-rezzing it (attacks as a Killer with +2 to deck speed).

Source

 * Chromebook Volume 3, pg.80