Applicability of Deepfakes in the Field of Cyber Security

Czech title

Použitelnost Deepfakes v oblasti kybernetické bezpečnosti

Language

English

Abstract

Deepfake technology is still on the rise, many techniques and tools for deepfake creation are being developed and publicly released. These techniques are being used for both illicit and legitimate purposes. The illicit usage yields the need for development and continuous improvement of detection tools and techniques as well as educating broad public about the dangers this technology presents. One of the unexplored areas of the illicit usage is using deepfakes to spoof voice authentication. There are mixed opinions on feasibility of deepfake powered attacks on voice biometrics systems providing the voice authentication, and minimal scientific evidence. The aim of this work is to research the current state of readiness of voice biometrics systems to face deepfakes. The executed experiments show that the voice biometrics systems are vulnerable to deepfake powered attacks. As almost all of the publicly available models and tools are tailored to synthesize the English language, one might think that using a different language might mitigate the mentioned vulnerabilities, but as shown in this work, synthesizing speech in any language is not that complicated. Finally measures to mitigate the threats posed by deepfakes are proposed, like using text-dependent verification because it proved to be more resilient against deepfakes.

Keywords

deepfake, cyber security, voice biometrics

Department

Department of Intelligent Systems FIT BUT

Degree Programme

Information Technology and Artificial Intelligence, Specialization Cybersecurity

Files

Status

defended, grade A

Date

22 June 2021

Reviewer

Homoliak Ivan, Ing., Ph.D.

Committee

Hanáček Petr, doc. Dr. Ing. (DITS FIT BUT), předseda
Drábek Vladimír, doc. Ing., CSc. (DCSY FIT BUT), člen
Drahanský Martin, prof. Ing., Dipl.-Ing., Ph.D. (DITS FIT BUT), člen
Holík Lukáš, doc. Mgr., Ph.D. (DITS FIT BUT), člen
Malinka Kamil, Mgr., Ph.D. (DITS FIT BUT), člen
Veselý Vladimír, Ing., Ph.D. (DIFS FIT BUT), člen

Citation

FIRC, Anton. Applicability of Deepfakes in the Field of Cyber Security. Brno, 2021. Master's Thesis. Brno University of Technology, Faculty of Information Technology. 2021-06-22. Supervised by Malinka Kamil. Available from: https://www.fit.vut.cz/study/thesis/23761/

BibTeX

@mastersthesis{FITMT23761,
    author = "Anton Firc",
    type = "Master's thesis",
    title = "Applicability of Deepfakes in the Field of Cyber Security",
    school = "Brno University of Technology, Faculty of Information Technology",
    year = 2021,
    location = "Brno, CZ",
    language = "english",
    url = "https://www.fit.vut.cz/study/thesis/23761/"
}