Chinese citizen and former Apple engineer Di Liu has been caught stealing thousands of Vision Pro headset trade secrets before starting his new job at Snap, exposing a calculated deception that threatens America’s tech leadership.
Key Takeaways
- Apple filed a lawsuit against former employee Di Liu on June 24th for allegedly stealing thousands of proprietary documents related to Vision Pro technology
- Liu, a Chinese citizen residing in San Jose, deliberately misled Apple by claiming he was leaving for health reasons while secretly accepting a position at Snap
- Evidence shows Liu meticulously selected, renamed, and reorganized confidential files before transferring them to personal storage and deleting traces from his work laptop
- The stolen information likely overlaps with Snap’s AR Spectacles product line, where Liu now works as a product design engineer
- This case adds to Apple’s growing list of legal battles against former employees who misappropriated trade secrets, including cases involving China-linked organizations
Calculated Deception and Document Theft
Apple has taken decisive legal action against former engineer Di Liu, filing a lawsuit in Santa Clara County Superior Court on June 24th. The tech giant alleges Liu orchestrated a scheme to steal thousands of confidential research documents related to its Vision Pro headset technology before departing for competitor Snap. According to court documents, Liu, a Chinese citizen living in San Jose, claimed he was leaving Apple on October 30, 2024, to spend more time with his family and take care of his health.
However, Apple discovered Liu had already accepted employment at Snap on October 18, nearly two weeks before tendering his resignation. This deception allowed Liu to maintain access to Apple’s secure systems longer than the company’s standard protocol would normally permit for departing employees. During this extended access period, Liu allegedly downloaded thousands of proprietary documents containing sensitive information about Apple’s Vision Pro technology to his personal cloud storage.
“Mr. Liu’s actions were deliberate; logs on his Apple-issued work laptop show that Mr. Liu individually selected the folders he copied and, in some cases, renamed and reorganized them after moving them to his personal cloud storage account,” Apple said in the complaint. Further, Mr. Liu took actions to conceal movement of the files, intentionally deleting files from his Apple-issued work laptop.
Apple’s Legal Response and Damages Sought
The lawsuit highlights Apple’s aggressive approach to protecting its intellectual property, especially its closely guarded research on mixed reality technology. Although Apple cannot determine the exact content of all downloaded files, the company believes they contain critical trade secrets including codenames, technical specifications, product design details, and supply chain information related to the Vision Pro headset. These documents could provide Snap with an unfair competitive advantage in the augmented reality market.
“Worse still, the review of Mr. Liu’s Apple issued work laptop also shows that while maintaining access to Apple’s Proprietary Information under false pretenses, he used his Apple credentials to exfiltrate thousands of documents containing Proprietary Information from Apple’s secure file storage systems,” the iPhone maker’s lawyers stated.
Apple is seeking unspecified financial damages and the return of all stolen documents. Additionally, the company has requested a forensic examination of Liu’s personal devices to ensure complete deletion of any trade secrets. While Snap itself is not named as a defendant in the lawsuit, the timing and nature of Liu’s new role raise serious questions about the potential exploitation of Apple’s intellectual property.
Broader Pattern of Intellectual Property Theft
This case is part of a troubling pattern of intellectual property theft targeting American technology companies. Apple has previously pursued legal action against former employees for misappropriating proprietary information, including cases involving organizations with ties to China. The fact that Liu is a Chinese citizen adds another layer of concern about potential international dimensions to this industrial espionage case.
“The overlap between Apple’s Proprietary Information that Mr. Liu retained and Snap’s AR products for which Mr. Liu is a product design engineer suggests that Mr. Liu intends to use Apple’s Proprietary Information at Snap,” stated according to the filing.
For its part, Snap has distanced itself from Liu’s alleged actions. A company spokesperson stated they had “no reason to believe they are related to this individual’s employment or conduct at Snap.” Despite this denial, the case underscores growing concerns about the protection of American intellectual property and the challenges technology companies face in safeguarding their innovations against both domestic competitors and foreign interests. President Trump’s administration has consistently emphasized the importance of protecting American technology and intellectual property from theft, particularly by Chinese entities.
