On Tuesday, Facebook CEO Mark Zuckerberg answered questions from 44 senators from two committees in a hearing that went for nearly five hours.
On Wednesday, he will answer even more questions, from 55 representatives on the House Committee on Energy and Commerce, about the role Facebook played in various data-privacy scandals and how it can address those issues.
Zuckerberg had been training for weeks to face the three congressional committees, but his talking points didn’t prepare him to answer every question that came his way – some required specific figures or precise explanations that he wasn’t able to provide on the spot.
Even when prodded, Zuckerberg was careful not to promise a response, addressing questions he was unsure of with some variation of “If you’d like, I can have my team follow up with you after this.”
Here are some things Zuckerberg’s team will need to come back to senators with:
- A list of applications that Facebook has previously banned because data was transferred in violation of Facebook’s terms. Sen. Chuck Grassley
- The number of audits Facebook has conducted to ensure deletion of improperly transferred data, or “anything about the specific past stats, that would be interesting.” Sen. Chuck Grassley
- The number of accounts linked to the Internet Research Agency, a pro-Kremlin propaganda group, that Facebook has taken down. Sen. Dianne Feinstein
- Whether any Facebook employees worked with Cambridge Analytica while the data analytics company was working with Donald Trump’s 2016 presidential campaign. Sen. Maria Cantwell
- Whether the feature for adults using Facebook Messenger on Android to opt into using the app in combination with messaging and allow Facebook to collect data about their calls or texts also applies to minors. Sen. Roger Wicker
- How Facebook discloses to its users the tracking practices that take place after users log off. Sen. Roger Wicker
- Whether the specific “unverified divisive pages” on Facebook that Leahy displayed during the testimony were created by Russians. Sen. Patrick Leahy
- A breakdown by state of the 87 million profiles Facebook estimates to have had data swept up in the Cambridge Analytica scandal. Sens. Amy Klobuchar and Dean Heller (Heller asked for Nevada specifically)
- Whether there’s overlap between the 126 million users who may have seen content shared by Facebook groups associated with the Internet Research Agency and the 87 million who may have been affected by the Cambridge Analytica scandal. Zuckerberg said that an investigation was underway and that Facebook thinks it’s possible there could be a connection. Sen. Amy Klobuchar
- Whether it’s possible that the data Cambridge Analytica stored is in Russia. Sen. Amy Klobuchar
- An explanation of how Facebook treats data on devices not logged into it. Sen. Roy Blunt
- Whether Facebook’s “bug bounty” program will address impermissible sharing of information and not just unauthorized access to it. Sen. Jerry Moran
- Why Facebook moved for the dismissal of a discrimination lawsuit against it that argued that its tools allowed advertisers to not target certain groups, including people of color, for some housing and employment opportunities. Sen. Cory Booker
- How long Facebook keeps a user’s data after they delete their Facebook or Instagram account and whether that data can sit in backup copies. Sens. Dean Heller and Cory Gardner
- A breakdown of the principles Facebook will use to guide the development of artificial-intelligence practices, as well as details about those practices and how they could help users. Sen. Gary Peters
- A list of the firms other than Cambridge Analytica to which Aleksandr Kogan passed the Facebook user data he collected. Zuckerberg identified Eunoia but said there may have been a couple of others. Sen. Tammy Baldwin
- More information about how Facebook is accounting for organizations based outside the US when providing transparency about political ads. Sen. Tammy Baldwin
- Whether the government or federal officials can track what a person’s doing, with or without a warrant, on the social network. Sen. Cory Gardner
In addition to statistics and explanations, Zuckerberg told a few senators that his team would circle back to conversations about data-privacy legislation, including the Honest Ads Act (Klobuchar), the My Data Act (Sen. Richard Blumenthal), and the Consent Act (Sen. Ed Markey).
Sen. Thom Tillis asked that during Facebook’s investigation Zuckerberg go back to “the first known high-profile national campaign that exploited Facebook data,” but he did not ask him to follow up.
But other senators did require a follow-up, asking Zuckerberg to do the following:
- Submit regulation proposals to prevent a monopoly in the industry (though exactly which industry was unclear). Sen. Lindsey Graham
- Implement a 72-hour rule to notify users of a data breach. Sen. Amy Klobuchar
- Discuss the details of allowing civil-rights organizations to audit the companies dealing in areas of credit and housing.Sen. Cory Booker
- Discuss whether there should be financial penalties when large data providers like Facebook are breached. Sen. Maggie Hassan
- Send a Facebook representative to a meeting of chief executives and senior leaders to discuss the sale of illegal drugs online. Sen. Shelley Moore Capito
- Discuss creating legislation that unequivocally says users own their data and that makes a “stronger affirmative opt-in requirement” for Facebook. Sen. Todd Young
The record will be open for 14 days after the hearings, meaning senators will still be able to submit written questions. Zuckerberg can make corrections to his testimony during this time too.