You may well have seen one of these images yourself. Some have racked up millions of views as they go viral on social media.
One of the most-viewed photos shows a fan in the stadium wearing a Germany jersey, waving a German flag, and bearing a striking resemblance to Adolf Hitler, a fake that DW's Fact Check team debunked shortly after Germany's World Cup match against Curacao.
Some of these images we spot as fake right away; others we might easily mistake for real. Either way, they're having an effect.
"It is an event that gets billions of people around the world from different countries, different regions, different political circumstances, all watching the same matches at the same time," said Henry Ajder, one of the world's leading experts on deepfakes and manipulative AI.
"It is the perfect environment for people to start spreading deepfakes and AI generated content," he said, adding some were trying to change narratives to the rest of the world.
