"On him, we no longer seem able. His file vanished from Renraku’s banks a few months after the Hutten incident, and every attempt to begin a new one has been fruitless. Each entry vanishes almost as soon as it is made. I believe that he is, or has acquired the services of, a computer expert of the highest ability. He or his accomplice has inserted a dedicated virus of hitherto unknown sophistication into the Matrix. Renraku resources have failed to isolate it. We know of its existence only by its actions, as it destroys all data connected to Samuel Verner."