"I have been trying to determine who the Graverobbers are for a number of different reasons, but they are craftier than I would have expected. I had Valerie let a program loose in the Matrix that monitored any transmissions it got near to determine if the typing speed and modulation were the same as in the other Graverobber jobs. It came up a blank while they were actually working, but another routine program noticed activity in James Yoshimura’s account after his death."