Internal builds at Microsoft get stamped with unique IDs by the download server (special kernel running on those servers knows to GUID-stamp and log certain fil

Internal builds at Microsoft get stamped with unique IDs by the download server (special kernel running on those servers knows to GUID-stamp and log certain files when they are copied, I understand). So binaries are pretty traceable. Always assume that everything you type or view in a company is logged, especially in a place like MS where they basically control your computational oxygen down to the metal.