Microsoft is understood to be working with the FBI to apprehend the person or persons responsible. The company said in a statement:
"…there is no evidence that the intruder gained access to the source code for Office or any Windows products. There is no evidence to suggest that any of Microsoft's on-line services have been or will be affected by the incident, and we have no reason to believe that any customers have been or will be affected in any way. The security breach did not involve a security vulnerability in any Microsoft product.
"Also as stated earlier, the hacker may have viewed some source code under development for a future product. We remain confident based on all the evidence that no code has been modified or corrupted in any way.”