When Scarlett Johansson found out her voice and face had been used to promote an artificial intelligence app online without her consent, the actor took legal action against the app maker, Lisa AI.
The video has since been taken down. But many such "deepfakes" can float around the Internet for weeks, such as a recent one featuring MrBeast, in which an unauthorized likeness of the social media personality can be seen hawking $2 iPhones.
