Facebook CEO and cofounder Mark Zuckerberg appeared before a joint Senate panel hearing April 10, undergoing four hours of questioning about privacy stemming from the Cambridge Analytica scandal, according to The Washington Post.
Here are five things to know about the testimony.
1. Mr. Zuckerberg appeared calm and contrite over the course of the hearing, and he apologized for Facebook's role in allowing Cambridge Analytica to improperly gain access to the personal information of 87 million user profiles.
2. "It's clear now that we didn't do enough to prevent these tools from being used for harm as well," Mr. Zuckerberg said, according to The Washington Post. "And that goes for fake news, foreign interference in elections and hate speech, as well as developers and data privacy."
3. Lawmakers, including Sen. Bill Nelson, D-Fla., told Mr. Zuckerberg that if he did not change his company's privacy policies, legislators would have to take it into their own hands to reform regulations.
4. There were a few contentious exchanges over the course of the hearing, including one in which Sen. Lindsey Graham, R-S.C., questioned Mr. Zuckerberg over a 2016 memo written by Facebook Vice President Andrew Bosworth that suggested bad outcomes connected to Facebook were sometimes the inevitable collateral damage of the company's goal of global connectivity.
Mr. Zuckerberg avoided directly answering the question and instead said he believed it was important to cultivate a workplace where employees felt comfortable freely sharing their opinions.
5. Mr. Zuckerberg will appear before members of the House April 11.