Faced with the second and most difficult round of the "crisis" was found Mark Zuckerberg in Congress.
The Facebook CEO answered difficult questions about the company's data collection practices and the need for a new adjustment during a five-hour hearing with Parliament's Energy and Commerce Committee on Wednesday.
It was his second and final hearing this week following the Cambridge Analytica data scandal.
Zuckerberg reiterated his apology that Facebook made a "big mistake" by not taking responsibility. On Wednesday, when he was pressured by New Jersey Democrat Frank Pallone to answer "yes" or "no" to whether Facebook would commit to changing its default settings to minimize data collection "as much as possible degree. "
"This is a complex question that deserves more than a word answer," Zuckerberg said. Pallone called the response "disappointing."
Ο Kathy Castor pressed Zuckerberg hard on whether and how Facebook monitors off-platform users. Zuckerberg eventually admitted to Ben Luján that Facebook collects data from people who have not registered on the social network "for security reasons".
Many lawmakers also raised the prospect that Facebook's third-party data policies violated a 2011 agreement with the Federal Trade Commission following a previous privacy complaint. If so, Facebook may be subject to severe fines. The FTC confirmed last month that it was investigating Facebook.
The congressional hearing about that were exactly where the news came from. Cambridge Analytica, a data-driven company linked to President Donald Trump's campaign, had access to information from 87 million Facebook users without their knowledge.
Zuckerberg revealed Wednesday that his own data was also exposed.
The chief executive was largely unharmed after a five-hour meeting before the Senate Judiciary and Commerce Committee held a joint hearing on Tuesday. The hearing marked the first time he testified at the Capitol.
However, during the hearing in this House, the legislators hit Zuckerberg with more specific questions. But with only four minutes allocated to each of the committee's 55 members, there were limited opportunities for follow-up questions.
Facebook CEO previously said his industry needs to be regulated.
"The internet is growing all over the world… I think it is inevitable that some adjustment will be needed"
At both hearings, lawmakers pressed Zuckerberg for possible monopoly power. Zuckerberg said Wednesday that Facebook feels "very competitive" because the average American uses eight applications daily to communicate. It is not clear, however, how many of these applications also belong to Facebook.
His shares Facebook ended 4,5% on Tuesday and rose 1,5% on Wednesday.