In testimony before the U.S. House of Representatives Financial Services Committee, Zuckerberg defended Facebook’s plan for a digital currency known as Libra, which he acknowledged was a “risky project.” But, the social media company’s founder also faced questions about a host of other subjects, including data privacy.

Asked about a legal argument that Facebook’s attorneys made earlier this year that its customers have no expectation of privacy, Zuckerberg said that he was unable to comment without the full context.

Separately, Facebook also announced new election security measures, saying that it took down three networks of fake accounts, reports CNBC.