Cuban said the best way to avoid privacy issues with Facebook is to avoid it. "Just don’t use Facebook and you don’t have to worry about it." At the same time, Cuban says users need to be smarter about what they're using: "We're all happy to beat up on Mark Zuckerberg. Anybody read the terms of service?"

Why this matters: The Cambridge Analytica controversy has turned into a reckoning over Facebook's data practices. Facebook CEO Mark Zuckerberg has been publicly defending the company in media interviews and is expected to appear before Congress this month.

Go deeper: Facebook's new offensive