Tag
An article explaining how Windows carries a persistent identifier (GDID) that tracks users even behind a VPN, and how to disable the services that send it out.
Microsoft confirmed the existence of a Windows GDID device identifier that cannot be disabled, as documented in an FBI case filing, raising privacy concerns.
A detailed reverse engineering of Microsoft's Global Device Identifier (GDID) reveals it is a 64-bit Passport Unique ID assigned via Microsoft Account, debunking myths about it being derived from hardware serials. The writeup documents the full stack from wlidsvc to Connected Devices Platform to Delivery Optimization.