Summary Box: Norway hit by major data-theft attack

SECRETS STOLEN: Security officials say data from Norway’s oil and defense industries may have been stolen and sent out of the country. It’s feared to be one of the most extensive data espionage cases in the country’s history.

HOW IT WAS DONE: The methods varied, but in some cases individually crafted emails would trigger malicious software that would sweep recipients’ entire hard-drives for data and steal passwords, documents and confidential documents.

NOT KNOWN: The Norwegian National Security Authority did not name any companies or institutions that were targeted.