OpenAI Supply Chain Attack 2026: macOS ChatGPT Update Urged for Mac Users
OpenAI confirmed a supply chain attack compromised employee devices and exposed code-signing certificates. The breach, linked to a malicious Axios library update, forces all macOS users to update their ChatGPT app by June 12. Customer data remains unaffected, but security experts urge immediate action.
OpenAI Supply Chain Attack 2026: macOS ChatGPT Update Urged for Mac Users
summarize3-Point Summary
- 1OpenAI confirmed a supply chain attack compromised employee devices and exposed code-signing certificates. The breach, linked to a malicious Axios library update, forces all macOS users to update their ChatGPT app by June 12. Customer data remains unaffected, but security experts urge immediate action.
- 2OpenAI has confirmed a supply chain attack that compromised two employee devices and potentially leaked code-signing certificates, prompting an urgent security advisory for all macOS users of its ChatGPT desktop application.
- 3The incident, which occurred on March 31, 2026, involved the malicious update of a third-party JavaScript library called Axios, used by OpenAI and thousands of other developers worldwide.
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OpenAI has confirmed a supply chain attack that compromised two employee devices and potentially leaked code-signing certificates, prompting an urgent security advisory for all macOS users of its ChatGPT desktop application. The incident, which occurred on March 31, 2026, involved the malicious update of a third-party JavaScript library called Axios, used by OpenAI and thousands of other developers worldwide.
What Happened in the OpenAI Supply Chain Attack?
Axios Malware Breach Details
According to Forbes, the attack is believed to be linked to North Korean threat actors. The malicious versions of Axios—v1.14.1 and v0.30.4—were live for approximately three hours and contained a remote access trojan (RAT) that allowed attackers to infiltrate systems. OpenAI stated that the breach was limited to two employee endpoints, and no customer data or sensitive AI model information was accessed.
North Korean Hackers Connection
Cybersecurity experts describe this as a classic supply chain attack, where attackers compromised a trusted software dependency to infect downstream users. Axios is a widely used JavaScript library for making HTTP requests, and its malicious update was pushed through the official npm package registry. OpenAI, like many tech companies, automatically integrated the update into its development environment, leading to the compromise of internal machines.
AI Magazine reports that the malicious code included a backdoor that could exfiltrate data and execute remote commands. OpenAI’s security team detected the anomaly within hours and immediately revoked the compromised code-signing certificates. However, because those certificates may have been used to sign legitimate-looking malware, all macOS users are advised to update their ChatGPT app to the latest version, which includes fresh, uncompromised certificates.
The company has set a deadline of June 12, 2026 for users to install the update. After that date, older versions of the app will no longer be trusted by macOS security systems, potentially preventing ChatGPT from launching or functioning correctly.
How to Protect Your macOS ChatGPT App
Immediate Steps for Mac Users
While the supply chain attack primarily targeted OpenAI’s internal systems, the ripple effect poses a real risk to end-users. If threat actors managed to obtain valid code-signing certificates, they could theoretically sign their own malware to appear as a legitimate OpenAI application. This would bypass Apple’s Gatekeeper and notarization checks, which rely on certificate trust.
Forbes emphasizes that the risk is not hypothetical. In similar past incidents, stolen certificates have been used to distribute ransomware and spyware disguised as trusted software. OpenAI has not disclosed the exact number of affected users, but with millions of ChatGPT desktop installations on macOS, the potential attack surface is significant.
To protect yourself, follow these steps:
- Open the ChatGPT macOS app and navigate to Settings > About to check your version.
- If your version is older than the latest release, download the update directly from OpenAI’s official website or the Mac App Store.
- Do not download any ChatGPT-related software from third-party sources or unverified links.
Understanding the Risks of Certificate Revocation
Hacker News discussions from June 2024, when OpenAI first launched the ChatGPT desktop app for macOS, reveal that users were excited about the native integration. Now, that same app is the vector for a security crisis, highlighting the evolving risks of software supply chains.
OpenAI has stated it is working with law enforcement and cybersecurity firms to trace the origin of the attack. The company also plans to implement stricter dependency monitoring and automated signature verification for all third-party libraries in its development pipeline.
The supply chain attack on OpenAI serves as a stark reminder that even the most advanced AI companies are vulnerable to the weakest link in their software supply chain. As the June 12 deadline approaches, every macOS user should treat this update not as optional, but as a critical security measure. Failure to update could leave your system exposed to potential malware signed with a trusted OpenAI certificate.
