Elon Musk, Martin Lewis and Holly Willoughby were all featured in videos where they appear to promote lucrative investments. However, the celebrities never actually agreed to promote these products and never said what they appear to say.

That's because these videos were the work of deepfake technology fueled by accessible online artificial intelligence (AI) tools.

Sometimes, deepfake videos use cloned voices to create the impression that someone said something that they never said. Other times, real footage of someone was manipulated and put together to make it seem as if the person was promoting something they weren't.

Always make sure to check when receiving or watching a video which looks slightly suspicious whether it be from a celebrity or anyone. Think before you act!