Facebook founder and chief executive Mark Zuckerberg has admitted making mistakes, as he gave nearly five hours of testimony before US Congress on Tuesday, in the first of a two-day congressional hearing into the data breach scandal that has engulfed the company.
Zuckerberg repeated apologies he previously made for a range of problems that have beset the social network - from a lack of data protection that impacted 87 million users worldwide to the platform being improperly used for political means - insisting that the company is working to prevent future malfeasance.
Al Jazeera's Alan Fisher reports from Washington, DC.
