"Put an end to Renraku’s plans to investigate the People of the Matrix," Babel replied gravely. "I implanted a virus into the central Renraku network that is being transmitted to their systems all over the world. It will erase any trace of the data they’ve collected on us so far and make future attempts to gather information on us .. . difficult . It will eventually spread to other corporate systems with which Renraku interacts and remove any data they might have as well."