Judge Denies Acquittal for Ex-Google Engineer in AI Trade Secret Case
A judge refused to acquit Linwei Ding, convicted of stealing Google's AI trade secrets.
Why it matters: This case highlights the persistent insider threat risks and complexities in enforcing trade secret laws within the tech industry, especially amid rising AI innovation and economic espionage concerns.
- Linwei Ding was convicted on 14 counts: 7 economic espionage and 7 trade secret theft by a San Francisco jury on January 29, 2026.
- He stole over 2,000 pages of confidential AI-related documents and uploaded them to his personal Google Cloud account.
- Ding secretly worked with two China-based tech companies while at Google, including plans to become a CTO and launching his own AI startup.
- Each economic espionage count carries up to 15 years imprisonment and a $5 million fine; trade secret theft counts carry up to 10 years and $250,000 fines.
On January 29, 2026, Linwei "Leon" Ding, a former Google software engineer, was convicted by a federal jury in San Francisco on seven counts of economic espionage and seven counts of trade secret theft. Ding stole over 2,000 pages of Google's confidential AI proprietary information, including details about the company's hardware infrastructure and software platforms supporting AI model training — such as Tensor Processing Units (TPUs) and GPU systems. He uploaded these documents to his personal Google Cloud account.
While employed by Google between May 2022 and April 2023, Ding secretly affiliated himself with two China-based technology companies. Around June 2022, he was in discussions to become CTO of one such company and by early 2023 had founded his own AI-focused startup. These undisclosed relationships played a pivotal role in the espionage charges.
Charges carry severe penalties: up to 15 years in prison and $5 million fines per economic espionage count, and up to 10 years and $250,000 per trade secret theft. The U.S. Attorney remarked, "Silicon Valley is at the forefront of artificial intelligence innovation, pioneering transformative work that drives economic growth and strengthens our national security." FBI Special Agent Sanjay Virmani emphasized the critical collaboration between law enforcement and private sector leaders like Google in protecting sensitive technology.
Recently, the presiding judge denied motions to acquit Ding, signaling forthcoming rulings on remaining espionage-related matters. This case underscores ongoing challenges in prosecuting insider threats and protecting trade secrets in high-stakes AI development environments.
By the numbers:
- 2,000+ pages — confidential AI documents stolen by Ding
- 14 counts — combined convictions for economic espionage and trade secret theft
- 15 years — maximum prison term per economic espionage count
What's next: Further judicial rulings are expected regarding espionage charges tied to Ding's affiliation with China-based firms.