And this is why I use Windows 10 only for work and 1 Unity web game. Otherwise I am in linux.
That being said, I don't use pirated software so I have nothing to fear from that vector. I'm still not kosher with Microsoft scanning my files / hard disk.
Let's say a user had some copies of the NSA classified documents that Edward Snowden released on their hard disk and Microsoft found out. I'm 99.9% sure they'd notify the Feds. The lesson here kiddo's is to not have classified documents without the appropriate kids. If you must, don't have them anywhere where Windows can find them.
Thinkpad T430s 8GB DDR3, 1600x900, 128GB + 250GB SSD's, etc.
E6520, Precision M4400, D630, Latitude E6520
ThinkPad Tablet 16GB 1838-22U
IBM Thinkpad X61T, T61, T43, X41T, T60, T41P, T42, T410, X301