Some hackers have been able to place some bugs on the Microsoft Servers to mess with the Office systems and the data stored on Office cloud, but were disabled and disposed of by the efficient Microsoft Office team. Whenever a new bug is found or has effected people, Microsoft has come to rescue and has helped people with the issues. Though we can not comment on if Microsoft is working with the Government agencies to monitor data or services. This also makes some people uncomfortable with the issues caused further.
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Office is the latest set of application that comes with the office that will help you make your teamwork together.