OpenAI macOS security update

OpenAI told macOS users to update the ChatGPT app after finding a security issue in a third-party developer tool tied to how its Mac software is verified as genuine. (openai.com) The company said on April 10, 2026 that the issue involved a tool called Axios and that it was taking steps “out of an abundance of caution” to protect the certification process for its macOS applications. OpenAI said it found no evidence that user data was accessed, its systems or intellectual property were compromised, or its software was altered. (openai.com) A software certificate works like a digital ID card that tells a Mac an app really came from the developer it claims to be. OpenAI said users should install the latest versions of its macOS apps so the company can refresh that trust chain and block fake apps from posing as official ones. (openai.com) The warning applies to OpenAI’s Mac apps, including ChatGPT and Codex, according to reports citing the company’s notice to users. CNBC reported the update was mandatory for macOS users, and 9to5Mac said OpenAI asked users to install releases issued that day. (cnbc.com) (9to5mac.com) The immediate risk OpenAI described was impersonation, not a confirmed breach. Cybernews reported the company was trying to secure the mechanism that verifies its macOS apps as legitimate OpenAI software, while Mint reported the push was meant to stop fake ChatGPT apps. (cybernews.com) (livemint.com) That matters on macOS because users often install desktop software directly from developers rather than only through Apple’s App Store. When the certificate behind an app’s identity is in doubt, attackers can try to make malicious software look like a trusted download. (openai.com) (cybernews.com) OpenAI linked its response to a “widely reported, broader industry incident,” suggesting the problem was not isolated to one company’s codebase. Forbes reported OpenAI said all macOS users should update their OpenAI apps to the latest versions following the incident. (openai.com) (forbes.com) The company has not said that Windows, Android, or the web version of ChatGPT were affected by this certificate issue. An OpenAI Help Center article about a separate access issue said the disruption should not affect the ChatGPT web client, Windows, or Android users. (help.openai.com) For Mac users, the practical instruction is simple: install the newest OpenAI app release so the software can keep passing Apple’s trust checks as an official app. OpenAI’s public line has stayed the same since April 10: update now, even though it has found no evidence of a data compromise. (openai.com)