content: Windows 10 is spyware. It runs port scans of the computer by default and uploads the results to Microsoft. It sends all kinds of telemetry, including intact executables with the contents inside them, directly to Microsoft with no consent required. I did a WHOIS on some of the myriad IPs that stock Windows 10 connects to by default. One of them says it's purpose is to monitor for illegal activity or content on Microsoft services. Seeing as they consider Windows 10 a service, it stands to reason they may well be scanning and uploading some or all of what you do to Microsoft services for their analysis. On the WHOIS entry, it even had a separate e-mail for law enforcement requests. It is not secure for any purpose. Only use it if you have to.