I just read my November issue of Maximum PC and Alex Campbell dug deep into the End User Agreement for Windows 10. Here is what he discovered.
"The problem with this is that Microsoft says it shares that data (your data) 'with Microsoft-controlled affiliates and subsidiaries; with vendors working on our behalf; when required by law or to respond to legal process; to protect our customers; to protect lives; to maintain the security of our services; and to protect the rights or property of Microsoft.'
If Cortana sees your emails, an FBI subpoena can get them too..it (Microsoft) will happily share your data. Bing and Outlook.com collects your data. If you encrypt your data with any software Microsoft copies and stores the decript key on its servers. If called upon it (Microsoft) will then give a copy of the key to whomever may request it."
In short if you install Windows 10 you are fully agreeing to allow Microsoft to copy your data and any encryption keys and do as they please with it.
So yes if terrorist are planning an attack, or someone is downloading illegal content they should be caught, but there is the 4th ammendment for that.
But think of this, a corporation sends an email about a new technology, one that can hurt Microsoft, MS now has that information legally and can share it with whom they wish. This is a form of corporate espionage, if any competitive company uses Windows 10 including partners with MS, MS can share that information at their whim.
Also religious organizations that use Windows 10, with MS privacy agreement any and all information sent by peaceful religious organizations can be turned over the the FBI. Keep in mind this MS agreement states that MS will decript the information, even VPN's.
Stop and think what you do with your computer, what YOU do. Ya sure you abide by the law, but EVERYTHING you do on your computer is now subject to collection by MS. Your family photos, your email, your business information, your personal tax records, 100% of all you do being collected by MS. Sure you obey the law, but consider, Microsoft now collects your personal data and someone there makes the decision if what you do is legal or not. A warrant can be issued agianst you for family baby photos that your mother took of you when you come home from the hospital. Someone at Microsoft gets to make the call based on their morals, based on their upbringing, based on their understanding.
I am going to remove Windows 10 from my wife's laptop and never look back.
Consider, are you willing to let a Microsoft employee decide if the personal content on you computer is legal or not?
If you own a corporation are you willing to share confidential data with Microsoft and any and all companies they choose to?
If you are a member of a peaceful religious organization and send information via the Internet with Windows 10 are you willing to share all that data about your members with Microsoft and give them control over how it is used?
Nothing on a Windows computer is now YOURS. It belongs to Microsoft.