Google Chrome Allegedly Downloads Hidden 4GB AI Model Without Permission Raising Privacy Concerns Among Users
Reports suggest Google Chrome may be silently downloading a large AI model in the background on some systems without user permission sparking concerns about storage usage data consumption and transparency in browser behavior
A new controversy has emerged around Google Chrome, one of the most widely used web browsers in the world. Security researchers are now claiming that Chrome may be downloading a massive 4GB AI model in the background without informing users or asking for permission. The report has raised serious questions about privacy, data usage and how modern browsers handle hidden system processes.
According to security expert Alexander Hanh, the issue appears to be linked to a system called Gemini Nano. He claims that Chrome quietly checks whether a device is capable of running the AI model and then begins downloading related files without showing any pop up, warning or permission request. This process reportedly happens completely in the background, making it invisible to the user.
To support his findings, Hanh conducted a test on macOS. He observed that within just 14 minutes of creating a fresh Chrome profile, the browser generated a folder named OptGuideOnDeviceModel. Inside it, around 4GB of data was downloaded automatically. The most surprising part of the discovery was that the user was not notified at any stage, nor was any consent requested.
The purpose of this hidden download is believed to be connected to upcoming Chrome features. These may include writing assistance tools and other on device AI capabilities that rely on local processing instead of cloud servers. However, critics argue that even if the feature is useful, such a large download should not happen without clear user approval.
Experts are also raising concerns about the broader impact of this practice. If millions of Chrome users worldwide receive similar downloads, the total data volume could reach petabytes or even exabytes. This would not only increase energy consumption but could also contribute to higher carbon output. For users on limited or expensive data plans, such background usage may also lead to unexpected costs.
For those who want to check whether the file exists on their system, researchers suggest navigating to the Chrome user data directory and looking for a folder named OptGuideOnDeviceModel. However, simply deleting the folder may not be a permanent solution, as Chrome could download it again during future updates or background checks.
To prevent this, users can go to Chrome settings and enter chrome://flags in the address bar. From there, disabling options related to Optimization Guide On Device may help stop the process. Still, this method is not officially confirmed as a permanent fix and may vary depending on browser versions.
So far, Google has not issued any official statement regarding these claims. Until more clarity is provided, the report continues to raise concerns among users who are increasingly sensitive about privacy, background data usage and how much control software has over their devices.
