Peter Stokes is involved in a breach with a luxury retailer, using tactics like VPNs and rotating IP addresses to hide his digital activity. The FBI discovered a Global Device Identifier (GDID) linked to his Windows installation, which is a persistent device-level identifier that uniquely identifies Windows installations. GDID remains unchanged through operating system updates but resets with a full reinstallation. Disabling GDID is not possible, as attempts to do so would disrupt Windows activation. Users can minimize data linked to GDID by using a local account, reducing diagnostic telemetry, disabling Activity history, and carefully managing reinstalls. VPNs do not prevent Microsoft from logging GDID, IP address, and URL data. Privacy researchers view GDID as a covert tracking mechanism, and Windows lacks user-facing options to reset this identifier, unlike Apple and Google.