Deep fakes have become popular recently. The term refers to doctored media contents where one face's is swapped with someone else's face or performs someone else's face movements. In the last couple of years, numerous video clips, often involving celebrities and politicians, have gone viral on social media platforms. This has been enabled by easy to use apps capable to process user-generated content in real-time.Informally, deep fakes can be defined as realistic digital media (images, videos, or audio tracks) depicting untruthful content, obtained either by manipulating pristine material or generated from scratch. The attribute deep refers to the use of algorithms based on deep learning, a subfield of modern Artificial Intelligence (AI), which pushed the boundaries for many applications including media data manipulation and generation. Besides offering exciting opportunities in several fields (such as entertainment, content production, e-learning, and e-health), these advanced creation technologies are now widely recognized as a pressing threat to the reliability of visual information. 1This may have severe consequences for the digital identity and reputation of individuals.Many cases of misuse reported in the past months demonstrate the potential impact of manipulated data on disinformation. For example, the last US presidential campaign witnessed the viral diffusion of multiple deceptive visual manipulations: amongst others, an altered video of Joe Biden greeting the wrong state in a public speech, as well as retouched pictures of celebrities untruthfully implying their endorsement for Donald Trump. 2 Not very surprisingly, deep fakes become increasingly ubiquitous on the web: the estimated number of deep fakes on the web doubled every six months since 2018, reaching a total of 85'000 in 2020, 3 although it is not possible to tell which 1 https://www.theguardian.com/technology/ng-interactive/2019/jun/22/the-rise-of-thedeepfake-and-the-threat-to-democracy 2 https://www.fastcompany.com/90575763/we-have-the-technology-to-fight-manipulatedimages-and-videos-its-time-to-use-it 3 https://sensity.ai/how-to-detect-a-deepfake-with-sensity/