how fake faces become a weapon of massive deception

DECRYPTION – Undetectable to the naked eye, the faces of people who do not exist (“fake faces”) are proliferating on social networks. Created using artificial intelligence, they give a new dimension to disinformation and cyber attacks.

A year ago, Facebook dismantled a network of more than 900 fake groups, Facebook or Instagram pages and accounts, orchestrated by “The BL” (for Beauty of Life), a small group linked to a conservative American media, Epoch Media Group, draining more than 55 million followers.

Among these fake accounts, a dozen used the faces of people who never existed as their profile photos: fake faces, generated by artificial intelligence (AI) algorithms. Unlike a “deepfake”, which consists of embedding the face of one person on that of another in a photo or video, a “fake face” is a face that does not exist. It is generated from scratch by an artificial intelligence algorithm. With the latest advancements in technology, their level of detail and realism are such that they are undetectable to the naked eye.

At the origin of this performance, a class of learning algorithm, called “generative antagonist networks” (Generative

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