Mark Zuckerberg and Marissa Mayer field questions about Prism

The CEOs of Yahoo and Facebook were each on the hot seat Wednesday answering questions about the U.S. government’s data surveillance programs.

Yahoo CEO Marissa Mayer, in an on-stage interview at the TechCrunch Disrupt conference in San Francisco, said she couldn’t say more about the programs than Yahoo already has because doing so could be “treason.”