Windows 10 sends diagnostic data to Microsoft by default. In addition, Microsoft can specifically request information from a client via the telemetry service integrated into Windows 10. At the telemetry level "Full", which is the default level in Windows 10 Home and Pro, this includes, for example, access to the registry and the execution of certain diagnostic tools on the client. There is a risk that the diagnostic or telemetry data may contain sensitive information that could be passed on to third parties.