The Facebook CEO addresses the data breach involving firm with ties to Trump campaign

Zuckerberg: 'I'm really sorry that this happened'

Mark Zuckerberg has regrets.

“I’m really sorry that this happened,” the Facebook (FB) CEO told CNN’s Laurie Segall in an exclusive TV interview on Wednesday.

News broke this weekend that Cambridge Analytica, a data firm with ties to President Donald Trump’s 2016 campaign, accessed information from 50 million Facebook users without their knowledge, and might have kept that data even after Facebook told the company to delete it.

The revelation put Facebook and Zuckerberg under the microscope for their handling of user data and privacy.

Zuckerberg addressed the scandal publicly through a Facebook post on Wednesday. He wrote that the company made “mistakes” and outlined how it has changed its policies to make sure that user data is protected.

“I wish we’d taken those steps earlier,” Zuckerberg told Segall. “That … is probably the biggest mistake that we made here.”

Related: Mark Zuckerberg breaks his silence

In 2014, Facebook changed its platform to limit the amount of data that third-party developers could access.

Aleksandr Kogan, the data scientist who passed along data to SCL Group and its affiliate Cambridge Analytica, built a Facebook app that drew data from users and their friends in 2013. He was allowed access to a broad range of data at the time.

Though Kogan’s data was properly obtained, he breached Facebook’s policy when he shared that information with a third party, Facebook has said. When Facebook learned about the information being shared, it asked Cambridge Analytica to destroy the data. Cambridge said it had.

But a former contractor, Christopher Wylie, disputes that Cambridge Analytica destroyed the user data.

Zuckerberg told Segall that he regrets taking Cambridge Analytica at its word. “This was clearly a mistake,” he said.

Related: Mark Zuckerberg breaks his silence on Cambridge Analytica scandal

Zuckerberg says he's open to testifying before Congress

Zuckerberg said Facebook plans to alert everyone whose data was accessed by Cambridge Analytica. But he added that he wishes the company hadn’t waited so long to tell people what happened.

“That’s definitely something that, looking back on this, I regret that we didn’t do at the time,” he told CNN. “I think we got that wrong.”

And he said he’s made other mistakes along the way.

“I started this when I was so young and inexperienced,” the 33-year-old Zuckerberg said. “I made technical errors and business errors. I hired the wrong people. I trusted the wrong people,” he said.

“I’ve probably launched more products that have failed than most people will in their lifetime.”

But ultimately, he said, he’s learned from his missteps.

“That’s the commitment that I try to have inside our company, and for our community.”

CNNMoney (New York) First published March 21, 2018: 10:16 PM ET

Bossa Nova robot navigates autonomously and use AI for on-shelf inventory analysis

Hourlong waits are not unusual for HoP PK patrons

Hourlong waits are not unusual for HoP PK patrons

Patrons at downtown Fresno’s HoP PK restaurant, which opened in Novemeber, can wait up to an hour for table service, but they keep returning, establishing the downtown restaurant and pub as a thriving business.

Conor Lamb declared victory after a narrow lead in PA-18 and the GOP is looking at challenging the results

The special counsel’s team gives Trump’s lawyers more details on what they want to talk to the President about

Efforts to protect the special counsel are stalled in Congress as Trump poses serious threat to Russia probe

Andrew McCabe’s firing in the dark of night started a chain of events raising the stakes in the Mueller probe

The former FBI deputy director was besieged by accusations that he misled internal Justice Deptartment investigators

The push for a replacement comes after months of tension between Trump and his national security adviser, sources say

New documents raise questions about Michael Cohen’s claim that neither the Trump Organization nor campaign ‘was a party to the transaction’