How long will the Mark Zuckerberg testimony to Congress last today?

Facebook data scandal | How to check if your Facebook info. was sold to Cambridge Analytica

Facebook has said it is "investigating" the specific number of people whose information was accessed, including those in India and also emphasised that the CA's use of such data did not have its consent. Cook, who supports government regulation for online privacy, said Facebook's situation was particularly "dire".

Washington/San Francisco:Mark Zuckerberg on Wednesday told lawmakers that he was among the 87 million or so Facebook Inc users whose data was improperly shared with political consultancy Cambridge Analytica.

He was also asked whether he planned legal action against the researcher who gathered and sold users' data to Cambridge Analytica, Aleksandr Kogan.

But after two days of congressional testimony, what seemed clear was how little Congress seems to know about Facebook, much less what to do about it.

"I think that this certain situation is so dire and has become so large that probably some well-crafted regulation is necessary", Cook said. Zuckerberg said he believed it did, but McNerney challenged that when he had tried it, the information did not include his browsing history. Richard Blumenthal said he was "unsatisfied" with the hearing because it was "more of the apology tour, which we have heard before".

During today's testimony in front of the Energy and Commerce Committee, Representative Ben Lujan of New Mexico repeatedly asked the CEO to what extent the company collects data on people who have never had a Facebook account.

"We would like to thank Dr. Tayler for his service in what has been a challenging time for the company", Cambridge Analytica's board of directors said in a statement.

Zuckerberg didn't elaborate more than that during the exchange with Eshoo, including how much of his personal data CA obtained.

At both the House and Senate hearings, Zuckerberg said: "We didn't take a broad enough view of our responsibility, and that was a big mistake".

During Tuesday's questioning, Zuckerberg also disclosed his company was "working with" special counsel Robert Mueller in the federal probe of Russian election interference.

It is claimed that CA harvested the information to psychologically profile voters in the 2016 United States presidential election. "Advertisers and developers will never take priority over that as long as I'm running Facebook".

SELYUKH: And if it continues the same way the hearing went yesterday, we'll hear a lot about more privacy protections, a conversation about what regulation might look like.

Facebook's business model is, as the executive clarified, that it runs ads, and it does that by letting companies target people based on their information.