Seattle - The FBI is investigating a damaging computer assault on Microsoft, the world's leading software company, after hackers overwhelmed the company's connection to the Internet on Thursday, leading to the closure of several popular websites such as MSN.com and expedia.com
The attack comes after a difficult week for the Seattle-based company. Its services, used by millions of people and businesses, also broke down for two days this week because of a technical error, prompting complaints from across the globe. Microsoft said the two problems were unrelated.