i tend to work on the principle that if my antivirus/security scan/antimalware immunization suppliers want info they will give me something for free and both protect me and use me as "bait"to see what is out in the wild .
microsoft are more likely to wish to see what crashes the os so as they can patch the patches over the patches on the tweeks over the patches ............ back to the infinity of bill's garage
however considering the brave mr snowden,the pooter builders that factory install trackers and malware,encryption with backdoor access ,promis ,etc etc etc that have been created to collect "sipint" for states and "management and marketing statistics"for commercial clients even linux and tor and mil spec encryption are probably not as private as a very private thing.
i block ads and commercial trackers so as declutter my screen etc and use a variety of security tactics (mostly to protect me from infections rather than to conduct an exorcism of casper)but as one machine uses ms vista i sort of accept that ms will gather probably harmless data.gchq can see what i do because i want them to .