Giuseppe Ateniese
Giuseppe Ateniese is a computer security researcher whose work spans secure data storage, machine-learning privacy and encrypted AI. He earned degrees at Salerno and Genoa, then coauthored work on provable data possession, classifier training-set leaks and GAN attacks on collaborative learning and passwords. At Stevens, he led computer science, co-developed Accenture’s editable blockchain prototype, and coauthored attacks on private training data and passwords; he also co-founded Keyless. He has been a professor and Eminent Scholar at George Mason since 2021, where he studies privacy-preserving machine learning and works on language-model fingerprinting and encrypted inference.
- Now at
- George Mason University
Timeline
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1995–2000
Computer science degrees
He earns a Laurea in computer science at the University of Salerno in 1995, with Alfredo De Santis as his master’s advisor. He completes a computer science PhD at the University of Genoa in 2000 under Gene Tsudik.
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2007
Provable data possession
In 2007, he coauthors “Provable Data Possession at Untrusted Stores,” the full version of an ACM CCS 2007 paper. Its protocol lets a client verify that an untrusted server possesses the original data through probabilistic proofs built from sampled blocks, without retrieving the data.
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2013
Hacking machine classifiers
In 2013, he coauthors “Hacking Smart Machines with Smarter Ones” with Giovanni Felici, Luigi V. Mancini, Angelo Spognardi, Antonio Villani and Domenico Vitali. Their meta-classifier extracts meaningful information about other classifiers’ training sets.
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2016–2021
Chair at Stevens
In 2016, he becomes director of Stevens’ Department of Computer Science and occupies the Farber Endowed Chair, established by Dave Farber and his late wife, Gloria. Stevens awards him an honorary Master of Engineering in 2020.
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September 2016
Editable blockchain prototype
In September 2016, Accenture unveils an editable blockchain prototype for permissioned systems, based on a modified chameleon hash function developed with him. Accenture and Ateniese register U.S. and E.U. patents for the invention.
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2017
GAN attacks and PassGAN
In 2017, he coauthors “Deep Models Under the GAN” with Briland Hitaj and Fernando Perez-Cruz; its attack trains a GAN to generate prototypical samples from other participants’ private training data. He also coauthors PassGAN with Hitaj, Paolo Gasti and Perez-Cruz; it learns from leaked passwords and, with HashCat, matches 51%–73% more passwords than HashCat alone. He leads the Stevens study behind PassGAN.
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October 2019
Co-founding Keyless
By October 2019, he is a co-founder and Head of Research at Keyless, which aims to combine privacy-preserving cryptography and biometric authentication for online identity management.
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As of October 2026
Professor and CCI Faculty Fellow
In 2021, he joins George Mason University as Eminent Scholar in Cybersecurity, aiming to build a safe and private AI framework; he is a professor and CCI Faculty Fellow in Computer Science and Cyber Security Engineering. Earlier roles include teaching at Sapienza, assistant and associate professorships at Johns Hopkins, helping found its Information Security Institute, research at IBM Zurich and USC’s Information Sciences Institute, and a visiting professorship at Microsoft. His work covers privacy-preserving machine learning and blockchain-based decentralized secure computing; in 2025, he coauthors LLMmap to fingerprint language-model versions, and in 2026, he coauthors HEAT, a method for faster fully homomorphic inference.
Career
- Since 2021George Mason UniversityProfessor and Eminent Scholar in Cybersecurity; CCI Faculty Fellow in Computer Science and Cyber Security Engineering
- From 2019KeylessCo-founder and Head of Research
- 2016–2021Stevens Institute of TechnologyDirector; faculty chair
- Johns Hopkins UniversityFounder, Assistant Professor
- IBM ResearchResearcher
- University of Southern CaliforniaResearcher
- MicrosoftVisiting Professor
Education
- 2000University of GenoaPhD in computer science
- 1995University of SalernoLaurea in computer science
Sources and credits
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- Giuseppe Ateniese
- Giuseppe Ateniese | College of Engineering and Computing
- Provable Data Possession at Untrusted Stores
- [1306.4447] Hacking Smart Machines with Smarter Ones: How to Extract Meaningful Data from Machine Learning Classifiers
- NewsPoints June 2016
- Mason welcomes new Eminent Scholar in Cybersecurity | George Mason University
- Accenture Debuts Prototype of ‘Editable’ Blockchain for Enterprise and Permissioned Systems
- [1702.07464] Deep Models Under the GAN: Information Leakage from Collaborative Deep Learning
- [1709.00440] PassGAN: A Deep Learning Approach for Password Guessing
- These Powerful New Password Crackers Challenge Our Notions of 'Secure' | Stevens Institute of Technology
- Biometric security startup Keyless raises $2.2M for encrypted data solution
- Faculty | Department of Computer Science
- LLMmap: Fingerprinting for Large Language Models | USENIX
- [2609.01730] HEAT: Faster Fully Homomorphic Inference via Approximations-Weights Co-Adaptation



