It takes a few dollars and 8 minutes to create a deepfake. And that's only the start

Ethan Mollick, a business professor at the University of Pennsylvania's Wharton School, used a photo of himself (left) in an artificial intelligence platform where he generated a deepfake video of himself (right). (Ethan Mollick)

At first glance, the video Ethan Mollick posted on LinkedIn last month looks and sounds like what you'd expect from a business professor at the University of Pennsylvania's Wharton School. Wearing a checked shirt, he's giving a talk about a topic he's deeply familiar with: entrepreneurship.

Sure, his delivery is stiff and his mouth moves a bit strangely. But if you didn't know him well, you probably wouldn't think twice.