There might be more breaches of Facebook users' personal data even as the social media network grapples with acute criticism over its data leak scandal. Sheryl Sandberg, the Chief Operation Officer (CEO) at Facebook and second in command after founder-owner Mark Zuckerberg, said that the company is doing audits, but cautioned that more data breaches could surface. "I am not going to sit here and say that we're not going to find more because we are," Sandberg said in an interview to NBC.