A good reference for increasing privacy: (Do not use an MS account to log in to YOUR computer.) http://www.slate.com/articles/technology/bitwise/2015/08/windows_10_privacy_problems_here_s_how_bad_they_are_and_how_to_plug_them.1.html From the EULA and privacy policy:
“Microsoft collects information about you, your devices, applications and networks, and your use of those devices, applications and networks. Examples of data we collect include your name, email address, preferences and interests; browsing, search and file history; phone call and SMS data; device configuration and sensor data; and application usage.”
“We may collect information about your device and applications and use it for purposes such as determining or improving compatibility” and “use voice input features like speech-to-text, we may collect voice information and use it for purposes such as improving speech processing.”
“If you open a file, we may collect information about the file, the application used to open the file, and how long it takes any use [of]it for purposes such as improving performance, or [if you]enter text, we may collect typed characters, we may collect typed characters and use them for purposes such as improving autocomplete and spell check features.”
"Sometimes you’ll need software updates to keep using the Services. We may automatically check your version of the software and download software updates or configuration changes, including those that prevent you from accessing the Services, playing counterfeit games, or using unauthorized hardware peripheral devices. You may also be required to update the software to continue using the Services. Such updates are subject to these Terms unless other terms accompany the updates, in which case, those other terms apply. Microsoft isn’t obligated to make any updates available and we don’t guarantee that we will support the version of the system for which you licensed the software."
"Finally, we will access, disclose and preserve personal data, including your content (
such as the content of your emails, other private communications or files in private folders), when we have a
good faith belief that doing so is necessary to:
1. comply with applicable law or respond to valid legal process, including from law enforcement or other government agencies;
2. protect our customers, for example to prevent spam or attempts to defraud users of the services, or to help prevent the loss of life or serious injury of anyone;
3. operate and maintain the security of our services, including to prevent or stop an attack on our computer systems or networks; or
4. protect the rights or property of Microsoft, including enforcing the terms governing the use of the services - however, if we receive information indicating that someone is using our services to traffic in stolen intellectual or physical property of Microsoft, we will not inspect a customer's private content ourselves,
but we may refer the matter to law enforcement." (I think transparent title bars just increase clutter and thereby reduce efficiency.)