content: Windows 10 Cortana, security concerns. I understand why Microsoft wants Cortana to search through your private folders, contacts and your browser history. Cortana cannot give answers if he does not know you. Without your contact list, "Call Bob" would be meaningless.  However, since Cortana has access to everything on your computer, it most probably will become a target for hackers. Take control of Cortana and you take over your complete Windows 10. And probably also have direct access to all your Wi-Fi sens passwords and your OneDrive, or even worse your complete Office 365.