If you are using an untouched Windows 10 Preview and this will be even in the final release, you need to keep in mind your OS is
completely exposed for spying. You are totally transparent and they will know about everything you are doing.
They will know which programs and apps you are using via Telemetry and Windows Geolocation...
They will know which websites you are browsing via Internet Explorer and all Bing Apps which are also connected with Telemetry and Windows Geolocation...
They will know your exact home location through built-in GPS system if or maybe even if not you are using Windows Apps and Internet Explorer via Windows Geolocation...
They will record you Skype calls which everybody should nowadays already know...
They could identify your friends and family through People and Skype...
They will know your emails via the Mail app and Windows Mail...
They will know your data on your Computer via Windows Feedback and if you are using the MS Cloudsystem OneDrive...
In the end they will record and send all the data from to MS main server and make a profile about you and your habits.
Maybe they will even sell the data to corporations and intelligence agencies...
I have made a list which are all built-in spyware by MS in Windows 10:Apps:Cortana, Finance, Food & Drink, Games, Health & Fitness, Mail, Maps, News,
OneDrive, People, Skype, Sports, Travel, Weather, Windows Feedback, Windows Store
Programs and System Components:Auto Check Utility Proxy, Credential Manager, Internet Explorer, Family Safety, Microsoft Feeds, Windows Geolocation ( Locations and Settings ),
Windows Customer Experience Improvement Program / Software Quality Management / Application Experience / Application Impact Telemetry,
Windows Error Reporting, Windows Live, Windows Mail, Windows Phone, Windows Update
So this is not fear mongering, these are facts and if you want to use Windows 10 Preview and the final release in the future
I RECOMMEND TO REMOVE ALL THIS TROJAN SPYWARE. I hope everyone understands and it is clear now