The firm discovered the attack on October 14th, when the intruder created new user-accounts to gain even deeper access to the network.

ECONOMIST: Computer security: Worming out the truth | The

Increasingly, these devices look less like Windows PCs than a new breed of network client- simple, special purpose devices that access the user's data, applications and services on networked servers.

CNN: Is anyone listening to Bill Gates' theory on the PC's future?