CyrilXBT

LightningBTC | #BIP-110

npub1hkd25m5hz448233ktzel8fs9vrvck76kxdsq7n0z6p2zanr03rlstwl9p7

hex

621ea155d5ebd5450ef11f3998771a21dbfaef04b3a928d7640925c1035ccb28

nevent

nevent1qqsxy84p2h27h429pmc37wvcwudzrkl6auzt82fg6ajqjfwpqdwvk2qprpmhxue69uhhyetvv9ujuem4d36kwatvw5hx6mm9qgstmx42d6t326n4gcm93vln5czkpkvt0dtrxcq0fh3dq4pwe3hc3lce7zf23

Kind-1 (TextNote)

2026-05-17T02:15:22Z

CyrilXBT @cyrilXBT

GOOGLE JUST SILENTLY DOWNLOADED A 4GB AI MODEL TO YOUR COMPUTER WITHOUT ASKING.

No permission dialog.

No notification.

No way to stop it.

If you use Chrome there is a 4 gigabyte file sitting on your hard drive right now that you never agreed to download.

It is called Gemini Nano.

A security researcher just proved how it works.

He set up a completely fresh Chrome profile. Did not click anything. Did not scroll. Did not type a single keystroke.

Just opened the browser and watched.

14 minutes and 28 seconds later Chrome had silently scanned his GPU, RAM, and storage. Then wrote a 4GB file to his hard drive.

No prompt. No consent. Nothing.

Chrome's own logs show the download begins BEFORE the settings page where you could opt out is even loaded.

The file starts installing before the refusal button exists.

As of Chrome 148 any website you visit can trigger this download with one line of JavaScript.

You click a link to read a blog post. That click counts as user activation. Chrome pulls 4GB in the background silently.

The model does not even work well.

Cloud requests take 1.3 seconds. The local model at worst case takes over 9 minutes for a single response.

Google is using your storage, electricity, and bandwidth to run an AI that is 40 times slower than their own servers.

And the AI Mode button in Chrome does not even use the local model. It sends everything to Google's cloud anyway.

You pay every penalty. The visible feature ignores the local file entirely.

CHECK IF IT IS ON YOUR MACHINE RIGHT NOW:

Windows: C:\Users[YourName]\AppData\Local\Google\Chrome\User Data\Default\OptGuideOnDeviceModel\

Mac: ~/Library/Application Support/Google/Chrome/Default/OptGuideOnDeviceModel/

If there is a file called weights.bin Google downloaded their AI to your computer without asking.

HOW TO REMOVE IT:

Type chrome://flags in your address bar.

Search "optimization-guide-on-device-model" and disable it.

Search "prompt-api-for-gemini-nano" and disable that too.

Restart Chrome. Then manually delete the folder.

If you disable the flags AFTER deleting the folder Chrome redownloads the 4GB file on next launch.

Firefox requires explicit opt-in for AI.

Apple Intelligence requires explicit consent.

Chrome just takes your hard drive.

Screenshot this and send it to everyone you know who uses Chrome.

Follow @cyrilXBT for every privacy and AI development the mainstream is not covering correctly.

https://x.com/cyrilXBT/status/2055581616022732932

Raw JSON

{
  "kind": 1,
  "id": "621ea155d5ebd5450ef11f3998771a21dbfaef04b3a928d7640925c1035ccb28",
  "pubkey": "bd9aaa6e97156a75463658b3f3a60560d98b7b5633600f4de2d0542ecc6f88ff",
  "created_at": 1778984122,
  "tags": [
    [
      "r",
      "wss://nostr.bitcoiner.social/"
    ],
    [
      "r",
      "wss://nostr21.com/"
    ],
    [
      "r",
      "wss://bcast.girino.org/"
    ],
    [
      "r",
      "wss://nos.lol/"
    ],
    [
      "r",
      "wss://hist.nostr.land/"
    ],
    [
      "r",
      "wss://nostr.wine/"
    ],
    [
      "r",
      "wss://eden.nostr.land/"
    ],
    [
      "r",
      "wss://140.f7z.io/"
    ],
    [
      "r",
      "wss://relay.damus.io/"
    ],
    [
      "r",
      "wss://purplepag.es/"
    ],
    [
      "r",
      "wss://nostrcheck.me/relay"
    ],
    [
      "r",
      "wss://relay.layer.systems/"
    ],
    [
      "r",
      "wss://relay.primal.net/"
    ],
    [
      "r",
      "wss://relay.seq1.net/"
    ],
    [
      "r",
      "wss://relay2.nostrchat.io/"
    ],
    [
      "client",
      "Primal Web"
    ]
  ],
  "content": "CyrilXBT\n@cyrilXBT\n\nGOOGLE JUST SILENTLY DOWNLOADED A 4GB AI MODEL TO YOUR COMPUTER WITHOUT ASKING.\n\nNo permission dialog.\n\nNo notification.\n\nNo way to stop it.\n\nIf you use Chrome there is a 4 gigabyte file sitting on your hard drive right now that you never agreed to download.\n\nIt is called Gemini Nano.\n\nA security researcher just proved how it works.\n\nHe set up a completely fresh Chrome profile. Did not click anything. Did not scroll. Did not type a single keystroke.\n\nJust opened the browser and watched.\n\n14 minutes and 28 seconds later Chrome had silently scanned his GPU, RAM, and storage. Then wrote a 4GB file to his hard drive.\n\nNo prompt. No consent. Nothing.\n\nChrome's own logs show the download begins BEFORE the settings page where you could opt out is even loaded.\n\nThe file starts installing before the refusal button exists.\n\nAs of Chrome 148 any website you visit can trigger this download with one line of JavaScript.\n\nYou click a link to read a blog post. That click counts as user activation. Chrome pulls 4GB in the background silently.\n\nThe model does not even work well.\n\nCloud requests take 1.3 seconds. The local model at worst case takes over 9 minutes for a single response.\n\nGoogle is using your storage, electricity, and bandwidth to run an AI that is 40 times slower than their own servers.\n\nAnd the AI Mode button in Chrome does not even use the local model. It sends everything to Google's cloud anyway.\n\nYou pay every penalty. The visible feature ignores the local file entirely.\n\nCHECK IF IT IS ON YOUR MACHINE RIGHT NOW:\n\nWindows: C:\\Users\\[YourName]\\AppData\\Local\\Google\\Chrome\\User Data\\Default\\OptGuideOnDeviceModel\\\n\nMac: ~/Library/Application Support/Google/Chrome/Default/OptGuideOnDeviceModel/\n\nIf there is a file called weights.bin Google downloaded their AI to your computer without asking.\n\nHOW TO REMOVE IT:\n\nType chrome://flags in your address bar.\n\nSearch \"optimization-guide-on-device-model\" and disable it.\n\nSearch \"prompt-api-for-gemini-nano\" and disable that too.\n\nRestart Chrome. Then manually delete the folder.\n\nIf you disable the flags AFTER deleting the folder Chrome redownloads the 4GB file on next launch.\n\nFirefox requires explicit opt-in for AI.\n\nApple Intelligence requires explicit consent.\n\nChrome just takes your hard drive.\n\nScreenshot this and send it to everyone you know who uses Chrome.\n\nFollow @cyrilXBT for every privacy and AI development the mainstream is not covering correctly.\n\nhttps://x.com/cyrilXBT/status/2055581616022732932",
  "sig": "01623279c2ee9d0d8646f61996f842bc14c88a9fd356e37f533461af24247411da8f5d89c3a452dfcf735b9330aaafb46fe9e283d74155d5ec23333e36b00f4d"
}