Apple CEO Tim Cook said his company is actively reviewing and monitoring apps in the App Store to make sure they don’t put people at risk of having their personal data stolen.

“We’re always looking at improving and raising the bar,” he told MSNBC in an interview that’s set to air in full Friday night. “But we do carefully review each app and police now. And we don’t subscribe to the view that you have to let everybody in that wants to or, if you don’t, you don’t believe in free speech.”