Apple Sues OpenAI - Ex-Engineer, a Zero-Day Bug, and 'LOL, So Funny'
Apple sued OpenAI on July 10, 2026 over alleged trade-secret theft. Former engineer Chang Liu supposedly used a rare auth bug to download confidential files after joining OpenAI.
Apple and OpenAI used to share a stage. Now they share a docket.
On July 10, 2026, Apple filed a federal lawsuit in Northern California accusing OpenAI of building its next gadgets on Apple’s confidential work. The complaint reads less like a polite IP spat and more like a corporate spy thriller with Slack screenshots.
The wildest line allegedly came from a former Apple engineer after he had already left for OpenAI:
“LOL, I found out I can access the [network storage], so funny.”
What Apple says happened
Chang Liu, a systems electrical engineer who spent years on sensitive Apple hardware programs, left for OpenAI in January 2026. Apple says he never properly returned an Apple-issued laptop - and later discovered a rare authentication bug that still let him into shared network folders weeks after he was gone.
According to the complaint:
- Liu downloaded dozens of confidential hardware files - specs, presentations, project docs, even thick compilations about unreleased products
- He messaged a still-Apple colleague, Yu-Ting “Alyssa” Peng, and pointed her at folders
- Peng later joined OpenAI too (she is not named as a defendant)
- Apple has since patched the zero-day and cut the access
Also named: OpenAI hardware chief Tang Tan - formerly deep inside Apple’s product world - and io Products, the Jony Ive-linked company OpenAI bought. Ive himself is not accused of wrongdoing.
Why it matters beyond the memes
OpenAI is racing toward consumer hardware. Apple is suddenly a rival in that lane, not just a ChatGPT partner on iPhone. The 2024 deal that put ChatGPT behind Siri now looks like ancient diplomatic history.
Apple wants injunctions and damages. It wants the court to stop OpenAI from using anything allegedly lifted from Cupertino. OpenAI says it has “no interest in other companies’ trade secrets.” That sentence will get pressure-tested under discovery.
The complaint also claims a broader pattern: coaching new hires how not to “fumble” interviews by giving away Apple secrets, circulating tips on dodging Apple’s “dreaded badge revocation,” and turning recruiting into intelligence gathering.
Whether a jury buys the full picture is months away. The political chemistry is instant. Silicon Valley’s two loudest names in phones-meets-AI just turned partnership into open hostility.
The cast, quickly
| Name | Role in the story |
|---|---|
| Apple | Plaintiff - wants secrets locked and rivals blocked |
| OpenAI | Defendant - building gadgets, denies interest in stolen IP |
| Chang Liu | Ex-Apple engineer at OpenAI - alleged bug exploit |
| Tang Tan | OpenAI hardware chief - named defendant |
| io Products | Ive-founded hardware shop bought by OpenAI |
| Alyssa Peng | Messaged in complaint - later joined OpenAI, not a defendant |
In short
- Apple sued OpenAI on July 10
- Core claim: ex-employee used a zero-day auth bug to pull Apple files
- Broader claim: recruiting doubled as trade-secret hunting
- Partnership era → courtroom era overnight
Two companies. One alleged laugh message. And a hardware war that just got a filing number.