I am a Research Scientist at Visa Research on the Trustworthy AI Team. Feel free to reach out!

I completed my Ph.D. at with University of Florida and was advised by Patrick Traynor and Vincent Bindschaedler. My research lies at the intersection of Machine Learning and Computer Security.

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Attacks as Defenses: Designing Robust Audio CAPTCHAs Using Attacks on Automatic Speech Recognition Systems.

  • Network and Distributed System Security Symposium (NDSS), 2023.
  • Hadi Abdullah, Aaditya Karlekar, Saurabh Prasad, Sajid Rahman, Logan Blue, Luke Bauer, Vincent Bindschaedler, and Patrick Traynor
  • Paper


Who Are You (I Really Wanna Know)? Detecting Audio DeepFakes Through Vocal Tract Reconstruction

  • The 31st USENIX Security Symposium, 2022.
  • Logan Blue, Kevin Warren, Hadi Abdullah, Cassidy Gibson, Luis Vargas, Jessica O'Dell, Kevin Butler, Patrick Traynor.


Demystifying Limited Adversarial Transferability in Automatic Speech Recognition Systems

  • The 10th International Conference on Learning Representations, 2022.
  • Hadi Abdullah, Aditya Karlekar, Vincent Bindschaedler, and Patrick Traynor.
  • Paper


Beyond Lp clipping: Equalization-based Psychoacoustic Attacks against ASRs

  • The 13th Asian Conference on Machine Learning, 2021.
  • Hadi Abdullah, Muhammad Sajidur Rahman, Christian Peeters, Cassidy Gibson, Washington Garcia, Vincent Bindschaedler, Thomas Shrimpton, and Patrick Traynor.
  • Paper


The Faults in our ASRs: An Overview of Attacks against Automatic Speech Recognition and Speaker Identification Systems

  • 42nd IEEE Symposium on Security and Privacy, 2021.
  • Hadi Abdullah, Kevin Warren, Vincent Bindschaedler, Nicolas Papernot, and Patrick Traynor.
  • PaperProject Webpage


Hear "No Evil", See "Kenansville": Efficient and Transferable Black-Box Attacks on Speech Recognition and Voice Identification Systems.

  • 42nd IEEE Symposium on Security and Privacy, 2021.
  • Hadi Abdullah, Muhammad Sajidur Rahman, Washington Garcia, Logan Blue, Kevin Warren, Anurag Swarnim Yadav, Tom Shrimpton, Patrick Traynor.
  • PaperProject Webpage - Code


Practical Hidden Voice Attacks against Speech and Speaker Recognition Systems.

  • Network and Distributed System Security Symposium (NDSS), 2019.
  • 2nd place at CSAW'19 Applied Research Competition.
  • Hadi Abdullah, Washington Garcia, Christian Peeters, Patrick Traynor, Kevin Butler, and Joseph Wilson.
  • PaperProject Webpage - Code


2MA: Verifying Voice Commands via Two Microphone Authentication.

  • ASIA Conference on Information, Computer and Communications Security (ACM ASIACCS), 2018.
  • Logan Blue, Hadi Abdullah, Luis Vargas, Patrick Traynor.  In Proceedings of the 13th ACM 


Sonar: Detecting SS7 Redirection Attacks Via Call Audio-Based Distance Bounding

  • IEEE Symposium on Security and Privacy (S&P), 2018.
  • Christian Peeters, Hadi Abdullah, Nolen Scaife and Jasmine Bowers and Patrick Traynor and Bradley Reaves and Kevin Butler


AuthentiCall: Efficient Identity and Content Authentication for Phone Calls. 

  • USENIX Security Symposium, 2017.
  • Bradley Reaves, Logan Blue, Hadi Abdullah, Luis Vargas, Patrick Traynor, and Tom Shrimpton.


A novel approach of data sanitization by noise addition and knowledge discovery by clustering

  • Computer Networks and Information Security, 2015
  • Hadi Abdullah and Ahsan Siddique.