 Cyber expert James Boer told the AP real harm would be caused by the outage because systems we've come to rely on at critical times are not going to be available. We've got all of these critical systems. We've got, obviously, hospitals, airlines, banks. I've heard that there's emergency services involved. I'm Charles de la Desma, London. On Wall Street, the Dow down by 377 points. The Nasdaq dropped 144. This is SRN News.