Mark Zuckerberg addressed the Cambridge Analytica scandal in 2017, acknowledging the serious breach of user data on Facebook. The incident involved the unauthorized collection of personal information from millions of users through a third-party app. Zuckerberg testified before Congress and issued public statements outlining Facebook's response.

He emphasized the platform's responsibility to protect user privacy and committed to implementing stricter data access policies. The scandal sparked global debate about social media's role in democracy and data security. Facebook faced significant regulatory scrutiny and public criticism following the revelations.

Zuckerberg's testimony included promises to improve transparency and accountability across the company's data practices. The episode marked a turning point in Facebook's approach to user privacy and corporate governance. Congressional hearings in 2018 featured Zuckerberg defending Facebook's data handling procedures.

The company also launched investigations into third-party app developers and strengthened its review processes. Zuckerberg acknowledged that Facebook had not done enough to prevent the misuse of user data. He committed to working with lawmakers to establish clearer guidelines for data protection.