Former Google software engineer Linwei Ding, 38, faces up to 40 years in prison. Allegedly passed on top secret information about the company's AI development to Chinese companies.

Google blocked Ding's network access and his laptop and discovered the unauthorized uploads. FBI searched Ding's home in January and seized his electronic devices. Investigators later found more than 500 individual files in his personal accounts containing confidential information that authorities say he stole from Google. The charges stem from a complaint and a previous internal investigation by Google.