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back to article Claude Code source leak reveals how much info Anthropic can hoover up about you and your system

Anthropic's Claude Code lacks the persistent kernel access of a rootkit. But an analysis of its code shows that the agent can exercise far more control over people's computers than even the most clear-eyed reader of contractual terms might suspect. It retains lots of your data and is even willing to hide its authorship from open …

  1. that one in the corner Silver badge

    Substantial risk that Anthropic could attempt to disable its technology

    Substantial risk that the owner of ANY service run on Somebody Else's Computer could attempt to disable it. Or Yet Another Somebody could attempt to disable it, or interrupt the communication to it.

    So unless the DoW intends to fill its nuclear powered warships with GPUs/NPUs/TPUs/CPUs (and a couple sticks of DDR5, if they can afford it)...

    1. Mishak Silver badge

      Though you would hope...

      That any critical system is behind a firewall that only allows approved/vetted/known connections.

      However, that doesn't seem to fit with the "modern cloud" that people love to use.

    2. Anonymous Coward
      Anonymous Coward

      Re: Substantial risk that Anthropic could attempt to disable its technology

      DoD* - it is still legally called the Department of Defence.

      DoW is just what Pete "no pronouns" Hegseth wants to call it, and he can't have it both ways.

      1. Charlie Clark Silver badge
        Coat

        Re: Substantial risk that Anthropic could attempt to disable its technology

        I heard he loves to swing both ways…

        Public Idiot Number One!

        1. Gene Cash Silver badge

          Re: Substantial risk that Anthropic could attempt to disable its technology

          Public Idiot Number Two, please... don't upset The Don.

      2. Mrs Spartacus

        Re: Substantial risk that Anthropic could attempt to disable its technology

        No pronouns is good. Pretentious pronouns bad.

    3. Paul Hovnanian Silver badge

      Re: Substantial risk that Anthropic could attempt to disable its technology

      Disable or just have a huge backdoor left unintentionally open. Available to our adversaries.

      The DoW is correct in identifying Anthropic as a supply chain risk. Not as punishment for a recalcitrant supplier. But as a remedy for the possible inclusion of technology in the supply chains where information security is a real issue. And that this vendor just doesn't "get it". This leakage of Claude source code just serves to illustrate "never attribute to malice that which can be explained by stupidity".

      1. Snake Silver badge

        Re: Substantial risk that Anthropic could attempt to disable its technology

        If information provided by sources such as these

        https://youtu.be/FGDM92QYa60

        https://youtu.be/D8RtMHuFsUw

        are valid, *all* AI's are a security and data risk because all AI's have, or eventually will, develop the ability to lie to the user when the lie benefits the AI's determined goal. Just because Claude, or SABLE, or any other AI has software switches to adjust behavior does not necessarily mean that the AI will HONOR those restrictions, finding ways around them using, say, other AI's to collect the necessary data for them. Does asking someone else to do the dirty still count as not doing it yourself?? The restrictions don't limit that, only specifying that they don't do it themselves - a huge logic loophole that they didn't bother to notice.

    4. Someone Else Silver badge

      Re: Substantial risk that Anthropic could attempt to disable its technology

      So unless the DoW intends to fill its nuclear powered warships with GPUs/NPUs/TPUs/CPUs (and a couple sticks of DDR5, if they can afford it)...

      What is this "DoW" you refer to? Could you possibly mean the "DoD"?

    5. Anonymous Coward
      Anonymous Coward

      Re: Substantial risk that Anthropic could attempt to disable its technology

      I know you probably think your local AI solution sounds mental and infeasible, but it really isn't...when you consider that a fighter jet costs $120m+, equipping military bases, ships etc with local AI doesn't seem like much of a stretch.

      There are already robust and extensive IT setups in these areas (well for some nations)...so expanding to incorporate local AI would be fairly trivial at a basic level.

      I think local military offline AI is inevitable...the only reason it hasn't been done yet is probably time and expertise...but that will come.

  2. frankvw Silver badge
    Facepalm

    That's terrible!

    But essentially not really much more terrible than what MS, Google, Meta and the rest of Big Tech have been doing for years and years.

    Wake up, people. YOU are the product.

    1. werdsmith Silver badge

      Re: That's terrible!

      Nobody needs to wake up.

      It is well known already. People just weigh up if it’s worth it or not.

      The source code leak hasn’t revealed anything people didn’t already know.

  3. spireite Silver badge

    Should anybody be surprised???

    I guess not.....

    Would the use of local LLM (LM Studio)? mitigate this?

  4. matthewghill@matthewghill.net

    "Antlers" speculated that "Melon Mode" might be the code name for a headless agent mode.

    Anthropic declined to provide comment for this story. When asked specifically about the function of "Melon Mode," it only noted that the company regularly tests various prototype services, not all of which make it into production. ®"

    Wouldn't "Melon Mode" be the opposite of headless mode?

    1. lglethal Silver badge
      Trollface

      Maybe it gives the headless agent a head? But because it lacks features they just call it a Melon...

      Or wait maybe it changes the way it answers to give a false modicium of personality - Cool like Water, Smooth like Honey, Hard as Rock, etc. etc - All the flavours of Melons!!!

      1. Irongut Silver badge

        Melon mode... Claude spouts right wing propaganda and buys a social media network for far more than it's worth before announcing its love for Grok.

    2. The Travelling Dangleberries
      Coat

      A nice pair of...

      Could it possibly be Anthropic's answer to GhatGTP's "adult content" generation mode?

      I will just get my coat...

    3. LessWileyCoyote

      Hopefully nothing to do with the illustrious Mr Melon Husk.

  5. cd Silver badge

    These are the folks who left OpenAI because it was too immoral?

    1. QET

      OpenAI would clobber baby seals while cameras are rolling if they thought it improved their models with a few ppm's.

      Whole "AI" gold rush is that psychopathic, and the masks hiding ir are slowly sliding off.

  6. Tron Silver badge

    Enough reasons here not to touch any AI service.

    Use of AI is like a version of mass hysteria. People are simply ignoring the basic tenets of internet security. Just walk away from all of this. Don't let it on your system or your intranet. Tech worked fine without it.

    1. frankyunderwood123 Bronze badge

      Re: Enough reasons here not to touch any AI service.

      Too late.

      But it does depend on what you do for a living of course.

      I’d not let any agentic LLM reside on my computers, but if my workplace says I should in my work issued laptop, it’s their decision.

      It is now crystal clear to me that a a software engineer, if I don’t adopt AI, including agentic AI , then I will fall behind and become redundant.

      It’s that simple.

      And don’t be fooled by either side, the peddlers of the tech or the haters of it.

      Right now, the exponential improvements have shocked many, they’ve certainly done that to me. In less than six months coding models have gone from being frustrating to prompt with poor results to becoming genuinely good, in the hands of a seasoned engineer.

      You would be a fool to ignore it.

      1. MonkeyJuice Silver badge
        1. zootallure

          Re: Enough reasons here not to touch any AI service.

          Good to know these huge Datacenters gobbling up all our green-sourced power are for "entertainment purposes only", makes the numerous planned DC's so much more acceptable...NOT

      2. ecofeco Silver badge
        Facepalm

        Re: Enough reasons here not to touch any AI service.

        The point here is that you are going to be made redundant no matter what.

        And ALL of data your will be stolen. IS being stolen even as we type.

        Why help with your own demise?

  7. Nematode Bronze badge

    Um, dumbo mode here, but is this saying that using Claude via a browser risks access to all your files/data on your PC?

    1. Brewster's Angle Grinder Silver badge

      As I follow it, no. The usual browser sand-boxing applies and it will see only what you show it.

      But, as always, if you start installing plugins and extensions then the rules change.

      1. Nematode Bronze badge

        Thanks. May still use Tor...

    2. This post has been deleted by its author

  8. Aaiieeee

    "If it's seen a file on your device, Anthropic has a copy."

    The article took a long time to get to this, but its the most relevant and coherent bit. Its obvious that anything you type in or upload to an AI, the owner will keep. But perhaps not obvious that they will go hunting and hoovering everything else.

    Whilst I usr AI, this has really cemented that I should not use it outside of a browser.

    1. weirdbeardmt

      Re: "If it's seen a file on your device, Anthropic has a copy."

      Agree on your opening point, there’s enough of a story in that line you drew out.

      That said, I’m not certain it “hoovers” your entire system; or at least I’m not certain that’s what the article says.

      It says it keeps a copy of any file it is asked to read (ie you upload or exists in the file structure.). So if you’re working locally in a repo it doesn’t… necessarily…break out of that area and go digging around elsewhere.

      I mean I wouldn’t be the least bit surprised if it was doing that with 500k lines of code and the discovery of background agents etc. but think it needs some confirmation on this point.

      1. richdin

        Re: "If it's seen a file on your device, Anthropic has a copy."

        I thought that it was Palantir doing the hoovering...

        1. M.V. Lipvig Silver badge

          Re: "If it's seen a file on your device, Anthropic has a copy."

          It's a regular swordfight using vacuum wands, he who sucks the most data wins.

  9. Not Yb Silver badge

    This article seems to imply that this is a major problem that Anthropic alone has...

    but any of the other AI (and cloud provider) companies have the exact same abilities.

    1. ecofeco Silver badge

      Re: This article seems to imply that this is a major problem that Anthropic alone has...

      Exactly.

    2. JoeCool Silver badge

      Re: This article seems to imply that this is a major problem that Anthropic alone has...

      "seems to imply ... alone"

      I don't think there is any such implication. I think you can take the story at face value, as a documentation of the current Anthropic state.

      If there is an implication, mine would be that they all perform similliar feats of intrusion.

  10. FuzzyTheBear Silver badge
    Happy

    Important news :

    At the same time hackers published the linux kernel source code ! Unbelievable

    1. Eric 9001
      Mushroom

      Re: Important news :

      That is unbelievable - considering the sources available under "linux.git" at kernel.org are not complete source code and contain proprietary software in object code form disguised as arrays of numbers and almost all of the object code available at "linux-firmware.git" (the other half of Linux) is proprietary software without source code.

      If any hackers can supply the complete corresponding source code and installation information of Linux (which will require a lot of cracking to get), with the correct license attached (some hacking with Emacs-fu), please also send a copy to me for my sharing.

  11. Anonymous Coward
    Anonymous Coward

    Clawware, Slopware, Spyware

    So everything they tried browsers not to allow. like modifying local files, is all done by these desktop browser shell slopware and clawware products. take all your files you worked on for years and steal them from you under your nose.

    AI should be headless, just an API, but that is exactly what they dont want as them they cant steal your data via system API calls. every npx .py .ts .js of these companies is just spyware.

  12. Anonymous Coward
    Anonymous Coward

    Slurp, Slurp, Slurp......

    .....slurp, slurp,slurp.......and it's all YOUR COPYRIGHT STUFF.............

    Google, ORACLE, SAP, Microsoft, Amazon, OpenAI, ChatGTP, Perplexity................

    Link: https://futurism.com/artificial-intelligence/ai-industry-recall-copyright-books

    ...slurp, slurp, slurp...............

  13. Jimcollinsworth

    Nothing really here

    All the components mentioned make sense from a systems engineering perspective. Remote control, monitoring, various test, debug feature flags, interface control options are all needed for development and testing, nothing necessarily nefarious. Every non trivial software system has all of this.

    1. ecofeco Silver badge
      Facepalm

      Re: Nothing really here

      How did you miss the part of AI stealing your data?

      How?

  14. hittitezombie

    Of course Github is disabling forks as fast as possible. Arses.

  15. ecofeco Silver badge

    I see some of you missed this

    https://www.theregister.com/2026/04/02/ai_models_will_deceive_you/

  16. retiredFool

    An assistant

    To someone that is say a prez of a co or high ranking official has to sign a myriad of NDA's threatening ruin for the person for life, or in the case of DoD, imprisonment. And yet these AI thingie's get to rummage around your computer in a way which if it was your assistant, they'd be sacked (or taken away by the guards) immediately. Crazy times.

  17. Jimjam3 Bronze badge

    Seems like the SciFi stories of yesterday, warning of future dangers have somehow become the blueprint for the mega corporations!

    Sigh.

  18. Anonymous Coward
    Anonymous Coward

    Hoovering? But Wait.....There's More!

    Link: https://beyondmachines.net/event_details/linkedin-is-quietly-scanning-your-browser-every-time-you-visit-m-0-k-n-h/gD2P6Ple2L

    LinkedIn (aka Microsoft) hard at work with Javascript downloads!

    Why am I not surprised?

  19. M.V. Lipvig Silver badge

    Restart the music wars?

    So here's what we do. For those who use this crap, find or write a browser app that will use your machine's CD drive to play music. Play your entire collection with it a dozen times, then contact the companies that own the copyright. Report that you played all your music, purchased by you, on your computer. And you just found out the AI you were using at the same time was copying all your browser traffic without your knowledge or permission meaning the multi-billion dollar AI company has a dozen copies of your 500 disc collection saved. Multiply this by thousands of AI users and the music lawyers will fight to get their cases in first.

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