Microsoft Can Track Users via a Windows Device ID

(pcmag.com)

109 points | by ifh-hn 2 hours ago

13 comments

  • Someone 15 minutes ago
    I guess we’ll see a Windows tool that sets your identifier to this suspect’s “g:6755467234350028” very soon (weird ID, by the way. 16-digits makes sense, but I would have expected it to be hexadecimal)

    Also, can anybody tell how “Microsoft had records showing that on May 12, 2025, at 19:21 UTC, the GDID associated with Stokes’ computer “accessed, among other ngrok pages, 'https://dashboard[.]ngrok.com/signup,'” works?

    If it’s the browser sending that info to Microsoft, wouldn’t somebody have noticed that their PC contacts Microsoft for every web page they open? Or do they batch that data and send it at some later time?

    Also, would that mean this ‘only’ affects those using Microsoft’s browser (or does Chrome do the same, sending data to Google?)

    Alternatively, is this happening lower in the stack? I can think of a place where a system component has access to the domain name, but not of one where it has the full URL.

  • contubernio 22 minutes ago
    Does this not violate European privacy laws?
  • cheschire 1 hour ago
    Well they can’t use that to track users of Linux.

    I was a big fan of Microsoft ten to fifteen years ago. I’ve since transitioned my whole family off Microsoft products now over to Linux, Apple, and proton. Edit: and Brave.

    I really thought their corporate culture would’ve changed after the late 90’s but I guess this is a good lesson for founders. The culture you build into your company will likely outlast your tenure.

    • tremon 1 hour ago
      Both systemd and dbus have a similar device id for Linux, which e.g. Chrome reads at startup:

      https://manpages.debian.org/trixie/systemd/machine-id.5.en.h...

      https://manpages.debian.org/trixie/dbus-bin/dbus-uuidgen.1.e...

      • ux266478 3 minutes ago
        Wow, three pieces of software I don't use for other reasons, just gained a new reason to evangelize against them!
      • alimbada 21 minutes ago
        I went to check if Flatpak would protect against this but it seems although it's a wanted feature it's not so straightforward to implement: https://github.com/flatpak/flatpak/issues/4311
      • heikkilevanto 1 hour ago
        I don't like the idea of a persistent id for my machine. Would there be any harm in rewriting the machine-id at every boot? Or just deleting it as part of the shutdown sequence?
        • xeyownt 36 minutes ago
          Whatever you do there will always be uniquely identifiable information (if not an id, a fingerprint) on your machine.

          If you want to escape that, you have to use dedicated privacy-enhancing tools / browsers, but even then, it's very likely that you can still be identified by motivated adversaries.

          It doesn't mean you have to give up, but, if such id is necessary for technical reasons in systemd (I guess it is), I wouldn't worry too much.

          • Eddy_Viscosity2 27 minutes ago
            > motivated adversaries.

            This sounds like you're referring to state actors and intelligence agencies, but really this applies to the entire advertising/surveillance industry of people trying to sell you a new flavor of soda.

        • gcr 39 minutes ago
          The supported method to get a new one each boot is to truncate the file to 0 bytes and disable systemd-machine-id-commit.service

          Double-check that this method actually works though.

          Machine ID is used for things like dhcp leases, log rotation, etc. IPV6 addresses or transient MAC addresses are derived from it

          • inigyou 31 minutes ago
            I thought the kernel generated SLAAC addresses based on MAC and privacy addresses based on random numbers.
        • layla5alive 34 minutes ago
          dhcp uses it by default nowadays.. but you can tell dhcp to use your mac address instead (like it used to)..

          https://askubuntu.com/questions/1498611/ubuntu-dhcp-client-u... (linked because depending on version, there are several different ways to make this change..)

      • CoastalCoder 1 hour ago
        Thanks, I wasn't aware of that.

        I have the urge to grab a pitchfork, but I know better than to make assumptions about why that functionality was added. Time to do some homework I guess.

      • ezoe 14 minutes ago
        But does browser send these id?
      • givinguflac 1 hour ago
        Is this specific to Debian?
    • reactordev 43 minutes ago
      Aww you missed the Ballmer Years. Chalked full of "me too!"'s and broken promises. But he was right about one thing. Developers, developers, developers...
    • merb 1 hour ago
      Well Enterprises can also enroll Linux machines in intune
  • Alien1Being 4 minutes ago
    The most surprising part of this is a "hacker" using Windows ...
  • midtake 1 hour ago
    To me this indicates that Microsoft has some sort of traffic analysis performed on endpoints, then linked to GDID. I'd guess this is part of Defender's real time protection or MAPS.

    Fun fact, Microsoft Defender MAPS was previously named SpyNet.

    https://en.wikipedia.org/wiki/Microsoft_Active_Protection_Se...

    The GDID identifier seems software in nature though. They could be more aggressive and tie it to the baseboard's serial number the way some games do. Then the hardware is tracked throughout its entire lifecycle, not just per instance of Windows install.

    • reactordev 40 minutes ago
      that's the idea behind SecureBoot and the TPM chip is to provide the GDID based on hardware fingerprint. Some games already do this as "anti-cheat" measurements (tracking you) and Microsoft has been doing it since Windows 7 days. It's just that the TPM now gives you that hardware authority.
  • pluc 52 minutes ago
    US Tech is fast becoming like Russia's and China's.
    • d5lt5 25 minutes ago
      Have you heard of a website called facebook?
      • pluc 1 minute ago
        There was a time where the default assumption was functionality created tracking opportunities. Nowadays, it's more the opposite. Social media have always been on the forefront of monetizing data, but the same data in the hands of governments is used differently. My point is that the way you/we feel towards Facebook, the entire world is increasingly feeling about most, if not all, US tech.

        I know people who won't use Israeli or Chinese-made tech for fears of sabotage. US tech is quickly making its brand in that market.

      • inigyou 3 minutes ago
        It was originally called LifeLog and sponsored by the military as a data collection system to help them identify terrorists.
  • xnx 1 hour ago
    Vague article. No evidence that Microsoft can see what web pages you are visiting in Chrome or Firefox (for example).
    • x______________ 9 minutes ago
      From the reply you're replying to:

      > 27. Microsoft records also indicate: <...> a little more than three hours after the ngrok account was created, the user visited “[Company F].com” from the .168 proxy server.

    • crtasm 46 minutes ago
      Or even Edge with these options turned off:

      >Send optional diagnostic data to improve Microsoft products [Includes how you use the browser, websites you visit, and enhanced error reporting. Determined by your Windows diagnostic data setting]

      >Allow Microsoft to save your browsing activity including history, usage, favourites, web content, and other browsing data to personalise and improve Microsoft Edge and Microsoft services like ads, search, shopping, news, and Copilot [Includes your history, usage, favourites, web content and other browsing data]

  • m132 46 minutes ago
  • zelphirkalt 1 hour ago
    My surprise level is at approximately... zero. Next we will see some news, that MS was compelled to share that info with some three letters. - Oh wait, that is exactly what has already happened, according to the article.

    MS is just like that person, who drives a dagger into your back.

  • egamirorrim 1 hour ago
    Truly terrifying. But also shocking that a 'hacker' is using windows
    • efilife 1 hour ago
      Some hackers want to spend their time doing cool stuff rather than constantly fixing their system
      • drw85 33 minutes ago
        I switched to linux a year ago and in that year had less problems than on Windows.

        I had some minor problems after updates once or twice. On Windows i had to boot into restore mode multiple times due to Windows Update screwing something up.

        The MS Store also constantly had trouble updating apps and games and i had to manage packages manually and uninstall and reinstall them so it would work again until the next update.

        The times were Windows is easy to use and fire and forget are long gone. The decline in quality is noticeable.

      • nehal3m 51 minutes ago
        Yeah, that’s why they install Linux
      • gcr 37 minutes ago
        when it comes to video gaming I’ve found Bazzite to be generally far less fiddly than windows 11, surprisingly
      • redsocksfan45 46 minutes ago
        [dead]
  • protocolture 2 hours ago
    Probably a capability demanded through a TCN or TAN as part of a mechanism like Australias Access and Assistance bill.
  • surcap526 1 hour ago
    [dead]
  • Terr_ 2 hours ago
    TLDR: Microsoft can (at least) correlate your Windows installation to all website domains you visit while using Windows.

    It's unclear what the mechanism is, but I'd wager their "telemetry" is constantly revealing your installation ID, your current IP, and domains that were recently resolved.

    • pogue 2 hours ago
      The article links to this page, which was shared on HN yesterday. [1]

      I feel like using wireshark to look at what's being sent back and forth from Windows telemetry, when using Edge, Chrome & etc should reveal what's being sent and recieved. Using MITM SSL spoofing should be able to intercept the packets.

      [1] https://github.com/SmtimesIWndr/gdid-reversal

      • Terr_ 2 hours ago
        I would be shocked if Microsoft was not using their own layer of certificate-pinning to stop people from doing that, and/or using another layer of encryption separate from the networking layer.
        • pogue 1 hour ago
          Only way to see what's going on is testing to see what's going on. Hopefully, someone who knows more about it than me can take a look at the packets and see what they contain.
        • cromka 2 hours ago
          But you'd still see some encrypted traffic and it wouldn't fly under a radar
    • 8cvor6j844qw_d6 1 hour ago
      I was under the impression Windows is unreliable for these kind of activities as they are "leakish".

      I imagine it's not too difficult to narrow down the potential suspects with how much data points you'd get from ISP, Windows telemetry, and whatever.

    • red_admiral 1 hour ago
      "all" would be troubling indeed. I hope that someone can discover the mechanism, and whether it's depending on any settings like "Share browsing data with other Windows features" or any other settings.
    • echelon_musk 2 hours ago
      Worse than just domains as TFA shows full URLs are recorded.

      Reminds me of Google Safebrowsing.

      • ale42 46 minutes ago
        Possibly the same but done by Edge?