The company that owns the Nasdaq Stock Market confirmed over the weekend that its computer network had been broken into, specifically a service that lets leaders of companies, including board members, securely share confidential documents.

The fact that the Web-based service, called Directors Desk, was penetrated could lend credence to one theory that law-enforcement authorities investigating the matter are considering, namely that hackers may be aiming to extract nonpublic inside information that could be used illegally to gain a trading edge. Get the full story »