>> Facebook CEO Mark Zuckerberg broke his silence Wednesday, writing on the platform he founded, quote, we have a responsibility to protect your data. And if we can't, then we don't deserve to serve you. The statement coming after days of uproar over reports 50 million Facebook users' data was improperly used by a political consulting firm.
The news sent the stock price plummeting and led lawmakers demanding answers from the social network's executive. Zuckerberg tried to explain how exactly a political firm called Cambridge Analytica was able to gain access to so much user data and use it to help Donald Trump's 2016 presidential campaign. Reuters correspondent David Ingram.
>> This news broke on Friday. Zuckerberg waited till Wednesday to speak. And the demands had been incessant for him to come out and say something. Either to explain what happened, to say what he was gonna do to fix it, or to just reaffirm Facebook's commitment to user privacy.
And for almost five days, users heard nothing from Mark Zuckerberg. And when Zuckerberg finally spoke, there was not anything like an apology or an I'm sorry. This was, here's what our policies were back then. We wouldn't allow this kind of thing today, and we're gonna make a couple of changes to restrict developers' access to data.
>> While Zuckerberg didn't say he was sorry, his number two, Sheryl Sandberg, in a post, said, quote, I deeply regret that we didn't do enough to deal with it. Facebook will also be investigating all apps that had access to large amounts of information before the company tightened data access in 2014.
And it will let users who were impacted by any data misuse know as well. Already, there's a lawsuit against Facebook and Cambridge Analytica for failing to protect and exploiting users' personal data. A Maryland woman is asking a federal judge to certify a class-action suit against both companies.