Deepfake forensics keynote: real cases of digital manipulation
Based on 60+ judicial cases as a court-appointed forensic expert (TRP, TJMG, TJSC), Thiago reveals how deepfakes, tampered evidence and manipulated source code are investigated — and what it means for companies, courts and society.
Why deepfake forensics matters now
Synthetic audio, edited video and altered screenshots now reach courtrooms, boardrooms and newsrooms every week. The question is no longer whether a file can be faked, but how anyone can prove that it was — or that it was not.
This keynote brings the view from inside real proceedings. As a court-appointed digital forensic expert for the Tribunal da Relação do Porto, TJMG and TJSC, Thiago Vieira has worked on more than 60 judicial cases involving deepfakes, manipulated evidence and forensic source code analysis.
From the forensic lab to the courtroom
The audience follows how a disputed file is handled: preserving it, documenting the chain of custody, checking metadata and artefacts, and explaining technical findings to a judge who is not a technologist.
Source code cases show another side of digital forensics: how analysing software can confirm or rule out copying, hidden functions or tampering, and why the method matters as much as the conclusion.
What leaders should do before a crisis
Most organisations only think about digital evidence after something goes wrong. The talk closes with practical steps: who to call first, what not to touch, how to keep logs and files admissible, and how to train teams to doubt convincing audio and video.
What the audience will learn
- Deepfakes in court — How synthetic audio and video are detected and challenged as evidence.
- Source code forensics — Real cases where analysing code decided the outcome of a lawsuit.
- Trust in digital evidence — What leaders must do to preserve evidence and avoid manipulation.
Legal teams, boards, security leaders, judiciary and tech conferences.
FAQ
Is this keynote technical?
No. It is built for mixed audiences. Technical detail is shown through real cases, so legal, business and tech professionals can all follow it.
Can the talk be adapted for legal or judicial events?
Yes. For law firms, bar associations and the judiciary, the focus shifts to admissibility, chain of custody and expert evidence.
In which languages is it available?
English and Portuguese, in person or online, typically 30 to 60 minutes.
Thiago Vieira is a court-appointed digital forensic expert (Tribunal da Relação do Porto, TJMG, TJSC) with 60+ judicial cases on deepfakes and forensic source code analysis, a licensed attorney in Brazil and Portugal, TEDx speaker, co-founder of Incubou, angel investor in 18+ startups and global advisor to cybersecurity companies through CyberTech Acceleration.
- Forensic Challenges in Real-World Cases of Digital Manipulation — Based on 60+ judicial cases as a court-appointed forensic expert (TRP, TJMG, TJSC), Thiago reveals how deepfakes, tampered evidence and manipulated source code are investigated — and what it means for companies, courts and society.
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