KUALA LUMPUR, Nov 10 — What began as a personal scandal involving one of Silicon Valley’s most powerful executives has become a crisis touching on corporate governance, national security and the global artificial intelligence industry.

Nvidia chief executive Jensen Huang’s admission that he was unfaithful to his wife, Lori, has attracted widespread attention. But it is his reported relationship with Alice Huang, a former executive at Singapore-based technology company Megaspeed, that has raised more serious questions.

According to The New York Times, US authorities investigated Alice Huang over suspicions that she had passed information to Beijing. China has rejected the espionage allegations, while Nvidia says it has no reason to believe company secrets or US national security information have been compromised.