From Newsgroup: alt.comp.os.windows-11
On Wed, 7/8/2026 3:33 PM, Java Jive wrote:
Ryan McBeth
The Secret ID That Tracks You
This Is Why VPN Users Still Get Caught https://www.youtube.com/watch?v=-0pFznEJf14
Can't stand this guy's noisy and overly melodramatic presentation style,
but sometimes he comes up with useful information, so occasionally I watch particular geo-politics videos. This one about Windows happened to catch my eye.
Spoiler alert: Basically, the video discusses that each Windows installation has a unique ID that can
be used to track individual devices, regardless of VPN use, etc.
In the WinXP era, we learned how the license for an OEM installation,
was tied to hardware information.
CPU - no serial number (only one known exception, PIII maybe)
RAM - each DIMM is serialzed
NIC - MAC address is unique (purchased from IEEE in "blocks")
Firewire - MAC address (Firewire is capable of TCP/IP as well, TCP/IP support removed W10)
Motherboard - may have some kind of number (one is present on the outside of the box), check the DMI.
HDD - drives can be swapped, so not a strong indcator
The one that counted the most, is the NIC MAC. This might be why (Magically)
at some point, motherboard makers had to have an onboard NIC, rather than
the customer fitting their own RealTek 5139 PCI card. There was a time, when low end motherboards were missing a lot of stuff, and you had to add PCI cards to bring them up to level.
One motherboard (NF2 based), the flasher could change the MAC of
the chipset NIC and the add-on Firewire. That's getting a little closer
to anonymization capability.
The Diagnostic Data Viewer in Windows, if you examine the outgoing telemetry, it is chock full of repeats of various "identifiers". So while it is true, that
slmgr /dlv
shows a variety of numbers for the install (an install that can be moved
from machine to machine!), the bedrock identifiers are the hardware itself.
So while Intel is avoiding the embarrassment of being caught holding
a serial number, the equipment still has usable materials.
Paul
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