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Skip to content THE SOURCE Close TopicsTopics Arts & Culture Business & Entrepreneurship Campus & Community Humanities & Society Medicine & Health Science & Technology SchoolsSchools Arts & Sciences Brown School McKelvey School of Engineering Olin Business School Sam Fox School of Design & Visual Arts School of Continuing & Professional Studies School of Law School of Medicine PublicationsPublications Newsroom The Record Washington Magazine Search Menu Search for: Search Close NEWSROOM Sections Find an Expert Media Resources Newsroom Stories Perspectives WashU Experts WashU in the News WashU Expert: DeFake tool protects voice recordings from cybercriminals Zhang is among three winners of Federal Trade Commission’s Voice Cloning Challenge to prevent, monitor and evaluate malicious voice cloning A new tool developed by computer scientist Ning Zhang embeds distortions imperceptible to human ears into audio recordings to prevent them from being cloned by cybercriminals. (Image: Canva) By Shawn Ballard April 19, 2024 SHARE In what has become a familiar refrain when discussing artificial intelligence (AI)-enabled technologies, voice cloning makes possible beneficial advances in accessibility and creativity while also enabling increasingly sophisticated scams and deepfakes. To combat the potential negative impacts of voice cloning technology, the U.S. Federal Trade Commission (FTC) challenged researchers and technology experts to develop breakthrough ideas on preventing, monitoring and evaluating malicious voice cloning. Ning Zhang, an assistant professor of computer science and engineering in the McKelvey School of Engineering at Washington University in St. Louis, was one of three winners of the FTC’s Voice Cloning Challenge announced April 8. Zhang explained his winning project, DeFake, which deploys a kind of watermarking for voice recordings. DeFake embeds carefully crafted distortions that are imperceptible to the human ear into recordings, making criminal cloning more difficult by eliminating usable voice samples. “DeFake uses a technique of adversarial AI that was originally part of the cybercriminals’ toolbox, but now we’re using it to defend against them,” Zhang said. “Voice cloning relies on the use of pre-existing speech samples to clone a voice, which are generally collected from social media and other platforms. By perturbing the recorded audio signal just a little bit, just enough that it still sounds right to human listeners, but it’s completely different to AI, DeFake obstructs cloning by making criminally synthesized speech sound like other voices, not the intended victim.” The project builds on Zhang’s earlier work to thwart unauthorized speech synthesis before it happens. Zhang and the other two winners of the Voice Cloning Challenge, whose proposals focused on detection and authentication, illustrate the variety of approaches being developed to deter harmful practices and protect consumers from bad actors. The winners were selected by a panel of judges and will split $35,000 in prize money. Originally published on the McKelvey School of Engineering website SHARE Media Contact  Leah Shaffer SectionsWashU Experts TopicsEngineeringScience & Technology Schools McKelvey School of EngineeringRead more stories from McKelvey School of EngineeringVisit McKelvey School of Engineering Leave a Comment Comments and respectful dialogue are encouraged, but content will be moderated. Please, no personal attacks, obscenity or profanity, selling of commercial products, or endorsements of political candidates or positions. We reserve the right to remove any inappropriate comments. We also cannot address individual medical concerns or provide medical advice in this forum. You Might Also Like Study: Machine learning can help optimize medical resource sharing in a crisis February 19, 2024 Published In Newsroom Stories Defending your voice against deepfakes November 27, 2023 Published In Newsroom Stories Wearable tech for contact tracing developed October 31, 2023 Published In Newsroom Stories Latest from the Newsroom Recent Stories Reframing voting as ‘duty to others’ key to increasing engagement, turnout Modifying homes for stroke survivors saves lives, extends independence Book explores consequences of political conversations WashU Experts Ten Commandments display probably not legal Social workers key to psychedelic-assisted therapies Tremor a reminder that East Coast, Midwest earthquake threat is real WashU in the News NFL faces ‘Sunday Ticket’ lawsuit: Here’s what’s at stake for the league Transcript: Ezra Klein Interviews Yanna Krupnikov The brain has a waste removal system and scientists are figuring out how it works Publications Washington Magazine Newsroom Record Explore Bookshelf Video Gallery Connect Media Resources Contact Facebook Instagram ©2024 Washington University in St. Louis Go back to top