New Delhi, Nov. 9 -- Nvidia on Sunday announced that its board has launched a probe into whether CEO Jensen Huang had been the target of a foreign intelligence effort. This comes after Huang, amid growing media reports of his close relationship with a Chinese businesswoman, admitted to the affair in a message to employees.

In his letter, 63-year-old Huang said he had been unfaithful to his wife and took "full responsibility" for his actions.

I was unfaithful to my wife. My actions hurt her and our children. There is no excuse for what I did. I am deeply sorry.

Throughout my life, my family has given me love and support. They deserve my honesty and loyalty. Instead, I let them down and damaged the life we built together. I take full res...