How trustworthy is Microsoft? For the federal and all of the German authorities, businesses and private users who want to continue to work with the Windows operating system, this question is now more than ever. Because sooner or later they would have to use Windows 8 or its successor. From internal documents TIME ONLINE exist, but it is clear that the IT professionals of the federal Windows 8 deem downright dangerous. The operating system contains a back door in their view, can not be closed. This backdoor is called Trusted Computing and could have the effect that Microsoft can control any computer remotely and control. And thus the NSA.