Newly Discovered Bug Could Expose Chrome Incognito Browsing History on Apple Mac Devices

Chrome users on Mac devices, grab your attention. A startling revelation in the tech world threatens the privacy you may have taken for granted on your computer. The engineer responsible for unveiling this issue is Evan Andersen, a student of engineering at the University of Toronto, who unexpectedly uncloaked a bug residing within Nvidia graphic cards. He meticulously documented this discovery on his blog which has, in turn, sparked a flurry of discussions across different tech circles.

This bug takes invasive measures to capture screengrabs of your Incognito browsing on Chrome. The implications become considerably grim if you’re sharing your computer with other users. The potential for private and personal information to be compromised on a larger scale is a terrifying thought.

This discovery emerged under peculiar circumstances. After reportedly visiting an adult site, Andersen decided to launch the popular game Diablo III using the same computer. While running the game in Chrome’s Incognito mode, the bug was exposed. In a moment reminiscent of a Hollywood thriller, the game froze temporarily during its launch. This interference prohibited any attempts to clear the screen. When the game finally unfroze just before the screen could clear, Andersen was able to take a censored screenshot.

Venture Beats reached out to Nvidia for comment to gain clarity on this issue. A company spokesperson responded stating “this issue is related to memory management in the Apple OS, not NVIDIA graphics drivers. The NVIDIA driver adheres to policies set by the operating system and our driver is working as expected. We have not seen this issue on Windows, where all application-specific data is cleared before memory is released to other applications.” With this comment, Nvidia essentially shifted the problem into Apple Mac OS X’s court.

From a cybersecurity standpoint, Andersen considers this bug egregious as it essentially infringes on the boundaries of the operating system. Notably, it permits non-root users to spy on each other’s browsing activities. Furthermore, its harmful effects may not be a result of deliberate exploitation, but could arise unintentionally. Users on shared computers could be inadvertently disclosing any visual content on their screens to other users.

As of this report’s release, it appears neither Apple nor Nvidia have addressed or resolved this bug. Over to you, Nvidia, Google, and Apple. Can you ensure privacy for your users once again?

This article was updated in 2025 to reflect modern realities.