Facebook CEO Mark Zuckerberg faced an army of US senators as well as journalists questioning him about Facebook’s efforts to protect users’ privacy and how they prevent manipulation of the election by some other countries during a joint hearing of the Senate Commerce, Science and Transportation Committee and Senate Judiciary Committees on Capitol Hill April 10, 2018 in Washington, DC./VCG Photo

Senator Lindsey Graham held up the Facebook’s user agreement and confronted the privacy and transparency policy of Facebook. /VCG Photo

It was revealed last month that a political consultancy hired by Trump’s team improperly gained access to data on 87 million Facebook users./VCG Photo

"It was my mistake, and I’m sorry. I started Facebook, I run it, and I’m responsible for what happens here,” said Zuckerberg. And then he continued disclosing that the company is hiring people to work on security. /VCG Photo