Terminator

Terminator is controller program allows the Netrunner to control terminals, or (with a little fine-tuning) videoboards and holodisplays. This means that he Intercepts anything typed (or written, or drawn) and can send anything he wishes to the output device In question (at a pre-programmed time). The 'runner can also make it appear that all messages and info originate from a specific terminal.

Source

 * Chromebook Volume 3, pg.79