This is only the beginning of Facebook’s privacy scandals.

That was the warning from operating chief Sheryl Sandberg, who said in a Friday interview that “it’s possible” Facebook will uncover more disastrous data leaks like the one to Cambridge Analytica.

“I’m not going to sit here and say that we’re not going to find more,” Sandberg said on NBC’s “Today,” “because we are.”

Sandberg and Facebook CEO Mark Zuckerberg have been scrambling to contain the fallout from last month’s scandal, which revealed that the private information of as many as 87 million users was leaked to a data firm that was working on President Trump’s 2016 election campaign.

She admitted that Facebook only recently began taking additional steps to secure user data — despite the Cambridge Analytica leak first being discovered in December 2015 — because the company “thought the data had been deleted” at the time.

Sandberg said Facebook didn’t bother informing its users about the leak for the same reason.

“You are right that we could’ve done this two and a half years ago,” Sandberg admitted.

She denied, meanwhile, that Facebook is “a surveillance operation,” arguing instead that it is “a sharing service.”

“We are not sweeping up data,” Sandberg said. “People are inputting data. People are sharing data with Facebook.”

The 48-year-old billionaire noted that it would be impossible to allow users to opt out of having their data used for advertising while still keeping Facebook free.

“We don’t have an opt-out at the highest level,” she said. “That would be a paid product.”

The Menlo Park, Calif.-based company will be sending its CEO to testify before Congress next week. This coming Monday, it will be informing all users whose data may have been shared with Cambridge Analytica.

Separately Friday, an EU official said Facebook has confirmed that the data of 2.7 million EU citizens were among those improperly used by Cambridge Analytica, and that the EU will press for more details.

On Wednesday, Facebook said it would rewrite its terms of service to be more transparent about what data it collects from its users and how it uses it.

The social network sought to spell out controversial policies, such as its collecting call and SMS information from users’ phones, in plain English.