This was the third U.S technology company in a week that has been attacked by a group of hackers. Previously Apple and Facebook has been attacked by the hackers.
Microsoft spokesman said after the attack that “This type of cyber attack is no surprise to Microsoft and other companies that must grapple with determined and persistent adversaries.”
Four days ago Apple has announced that they are attacked by same group of hackers who attacked Facebook days ago. It is said that these group of hackers are from China and they will target more Technology firms around the world.