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WASHINGTON (CBSMiami) – Facebook’s young CEO returned to Capitol Hill for a second day under the microscope.

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Mark Zuckerberg said he expects regulation of his industry after an incident that allowed users’ information to land in the wrong hands.

Zuckerberg told Congress he himself is a victim of the privacy scandal that has shaken Facebook.

The 33-year-old CEO faced a second day of questioning about how personal information from millions of users got into the hands of British consulting firm Cambridge Analytica.

Members of the House Energy and Commerce Committee suggested Facebook needs more oversight.

Zuckerberg did not disagree.

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“The internet is growing in importance around the world in people’s lives and I think that it is inevitable that there will need to be some regulation,” said Zuckerberg.

He did caution that too much of it could strangle smaller startups.

“I think these are all things that need to be thought through very carefully,” he said.

Zuckerberg stayed calm as congress members pressed for answers.

“Are you willing to change your business model in the interest of protecting individual privacy?” asked Anna Eshoo of California, to which Zuckerberg responded, “Congresswoman, I’m not sure what that means.”

He assured lawmakers the site is going through tens of thousands of apps to make they didn’t misuse data, but he admitted it’s a process that will take many months.

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The committee chairman says the panel will be widening its lens to see how other tech companies are handling security.