AntiMalware•August 19, 2026•🇷🇺Translated from Russian

OpenAI ChatGPT Computer History Feature on macOS Could Expose Detailed User Activity Logs to Infostealers

OpenAI has rolled out a new Computer History feature in the ChatGPT desktop application for macOS that converts recent user activity into structured summaries and memories for use by ChatGPT and Codex.

The system captures application switches, mouse clicks, text input, keyboard shortcuts, and additional context obtained through macOS accessibility APIs. These raw events are processed locally for up to 48 hours before deletion, after which brief summaries are generated and stored as ordinary Markdown files on the device.

The feature is turned off by default and requires users to enable Memories. It is currently available only to Pro, Business, and Enterprise subscribers, with administrator approval needed for corporate plans. Access is blocked in the European Economic Area, Switzerland, and the United Kingdom.

Users can choose which applications and websites participate, pause data collection at any time, or delete records for the last ten minutes, hour, day, or entirely. Screenshots, audio, and private browsing activity are explicitly excluded from the logs.

Although OpenAI states that raw events are not retained on its servers and are not used for model training, the generated Markdown memory files remain unencrypted. Any other application running under the same macOS user account can therefore read them, giving infostealers a ready-made daily activity report.

OpenAI additionally cautions about prompt injection risks: hidden instructions embedded on websites or inside applications may enter the context window and cause ChatGPT or Codex to follow attacker-controlled directives.

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