Spies access US weapons data

Computer spies have repeatedly breached the Pentagon's costliest weapons programme, the US$300 billion ($537 billion) Joint Strike Fighter project, the Wall Street Journal reported.

The newspaper quoted Government officials familiar with the matter as saying the intruders were able to copy and siphon data related to design and electronics systems.

The spies could not access the most sensitive material, which was kept on computers that were not connected to the Internet.