Windows collects telemetry data, which includes hardware specifications, installed software, and system events, but does not reveal personally identifiable information. This data is encrypted and sent via HTTPS during significant events like system crashes. Users can manage optional data collection settings during initial setup or in the Privacy section of the Settings app, with enterprise versions offering more control. Mandatory data collection in Windows is more extensive than in macOS, while Linux has minimal data collection due to its decentralized structure. Users can disable some data collection, but some information will always be gathered unless advanced measures are taken.