"Today we noticed Chrome unexpectedly opening Gmail and searching through emails related to us, while Codex was shown controlling Chrome from the menu bar.
After investigating for a while, we traced the behavior back to the Codex Suggestions feature. It appears the system periodically creates background sessions to generate personalized task suggestions, and in this case, Computer Use was not properly disabled for those sessions.
As a result, the agent began autonomously browsing and searching personal information inside the browser.
This seems more like an unintended product/design issue rather than malicious behavior, but it does highlight important concerns around background agent permissions, visibility, and safety boundaries for Computer Use systems."