Forget Me, Not My Friends! Object Unlearning Based on Scene Graphs

Authors: Chenhan Zhang, Benjamin Zi Hao Zhao, Hassan Asghar 0001, Weiqi Wang 0003, An Liu 0002, Dali Kaafar

Source: Proceedings of the Nineteenth ACM International Conference on Web Search and Data Mining. :913-923

CTIGuardian: A Few-Shot Framework for Mitigating Privacy Leakage in Fine-Tuned LLMs

Authors: Shashie Dilhara Batan Arachchige, Benjamin Zi Hao Zhao, Hassan Jameel Asghar, Dinusha Vatsalan, Dali Kaafar

Source: 2025 Annual Computer Security Applications Conference Workshops (ACSAC Workshops). :510-522

Subject Terms: Machine Learning, FOS: Computer and information sciences, Artificial Intelligence (cs.AI), Cryptography and Security, Artificial Intelligence, Cryptography and Security (cs.CR), Machine Learning (cs.LG)

Access URL: http://arxiv.org/abs/2512.12914

dX-Privacy for Text and the Curse of Dimensionality

Authors: Hassan Asghar 0001, Robin Carpentier, Benjamin Zi Hao Zhao, Dali Kaafar

Source: Proceedings on Privacy Enhancing Technologies. 2026:224-241

Subject Terms: FOS: Computer and information sciences, Cryptography and Security, Cryptography and Security (cs.CR)

Access URL: http://arxiv.org/abs/2411.13784

Membership Inference Attack Vulnerabilities of Record Linkage Models

Authors: Piyumi Seneviratne, Dinusha Vatsalan, Dali Kaafar

Source: Proceedings of the 34th ACM International Conference on Information and Knowledge Management. :5218-5222

Unsafe by Design? A First Look at Security and Privacy Risks in OpenAI’s Custom GPT Ecosystem

Authors: Sunday Oyinlola Ogundoyin, Muhammad Ikram 0001, Hassan Jameel Asghar, Benjamin Zi Hao Zhao, Dali Kaafar

Source: Proceedings of the 24th Workshop on Privacy in the Electronic Society. :147-161

Differentially Private Release of Datasets using Gaussian Copula

Authors: Hassan Jameel Asghar, Ming Ding, Thierry Rakotoarivelo, Sirine Mrabet, Dali Kaafar

Source: The Journal of Privacy and Confidentiality, Vol 10, Iss 2 (2020)

Subject Terms: differential privacy, synthetic data, high dimensional, copula, Technology, Social Sciences

File Description: electronic resource

Relation: https://journalprivacyconfidentiality.org/index.php/jpc/article/view/686; https://doaj.org/toc/2575-8527

Access URL: https://doaj.org/article/6a224679836f448683a4f6bee112b8be

Property-preserving hashing for $$\ell _1$$-distance predicates: Applications to countering adversarial input attacks

Authors: Hassan Asghar 0001, Chenhan Zhang, Dali Kaafar

Source: Cryptography and Communications.

Subject Terms: Machine Learning, FOS: Computer and information sciences, Cryptography and Security, Information Theory (cs.IT), Information Theory, Cryptography and Security (cs.CR), Machine Learning (cs.LG)

Access URL: http://arxiv.org/abs/2504.16355
https://arxiv.org/abs/2504.16355

Practical, Private Assurance of the Value of Collaboration via Fully Homomorphic Encryption

Authors: Hassan Jameel Asghar, Zhigang Lu 0001, Zhongrui Zhao, Dali Kaafar

Source: Proceedings on Privacy Enhancing Technologies. 2025:258-279

Subject Terms: FOS: Computer and information sciences, Computer Science - Machine Learning, Computer Science - Cryptography and Security, Cryptography and Security (cs.CR), Machine Learning (cs.LG)

Access URL: http://arxiv.org/abs/2310.02563

DIALEVAL: Automated Type-Theoretic Evaluation of LLM Instruction Following

Authors: Nardine Basta, Dali Kaafar

Source: CoRR.

Subject Terms: FOS: Computer and information sciences, Artificial Intelligence (cs.AI), Artificial Intelligence, Computation and Language, Computation and Language (cs.CL)

Access URL: http://arxiv.org/abs/2603.03321

Protecting User Prompts Via Character-Level Differential Privacy

Authors: Shashie Dilhara Batan Arachchige, Hassan Jameel Asghar, Benjamin Zi Hao Zhao, Dinusha Vatsalan, Dali Kaafar

Source: CoRR.

Subject Terms: FOS: Computer and information sciences, Cryptography and Security, Cryptography and Security (cs.CR)

Access URL: http://arxiv.org/abs/2603.26032
https://arxiv.org/abs/2603.26032

Privacy Preserving Release of Mobile Sensor Data

Authors: Rahat Masood, Wing Yan Cheng, Dinusha Vatsalan, Deepak Mishra 0001, Hassan Jameel Asghar, Dali Kaafar

Source: Proceedings of the 19th International Conference on Availability, Reliability and Security. :1-13

Subject Terms: FOS: Computer and information sciences, Computer Science - Cryptography and Security, 0202 electrical engineering, electronic engineering, information engineering, 02 engineering and technology, Cryptography and Security (cs.CR)

Access URL: http://arxiv.org/abs/2205.06641

Challenges with Passwordless FIDO2 in an Enterprise Setting: A Usability Study

Authors: Michal Kepkowski, Maciej Machulak, Ian D. Wood, Dali Kaafar

Source: 2023 IEEE Secure Development Conference (SecDev). :37-48

Subject Terms: FOS: Computer and information sciences, Computer Science - Cryptography and Security, Cryptography and Security (cs.CR)

Access URL: http://arxiv.org/abs/2308.08096

Can Self Supervision Rejuvenate Similarity-Based Link Prediction?

Authors: Chenhan Zhang, Weiqi Wang, Zhiyi Tian, James Yu, Dali Kaafar, An Liu, Shui Yu

Source: Lecture Notes in Computer Science ISBN: 9789819682973

Subject Terms: FOS: Computer and information sciences, Artificial Intelligence (cs.AI), Computer Science - Artificial Intelligence

Access URL: http://arxiv.org/abs/2410.19183

Bot Wars Evolved: Orchestrating Competing LLMs in a Counterstrike Against Phone Scams

Authors: Nardine Basta, Conor Atkins, Dali Kaafar

Source: Lecture Notes in Computer Science ISBN: 9789819682973

Subject Terms: FOS: Computer and information sciences, Computer Science - Computation and Language, Artificial Intelligence (cs.AI), Computer Science - Artificial Intelligence, Computation and Language (cs.CL)

Access URL: http://arxiv.org/abs/2503.07036

Use of cryptography in malware obfuscation

Authors: Hassan Jameel Asghar, Benjamin Zi Hao Zhao, Muhammad Ikram 0001, Giang Linh Duc Nguyen, Dali Kaafar, Sean Lamont, Daniel Coscia

Source: Journal of Computer Virology and Hacking Techniques. 20:135-152

Subject Terms: FOS: Computer and information sciences, Computer Science - Cryptography and Security, 0202 electrical engineering, electronic engineering, information engineering, 02 engineering and technology, Cryptography and Security (cs.CR)

Access URL: http://arxiv.org/abs/2212.04008
https://eprint.iacr.org/2022/1699

A Large-Scale Empirical Analysis of Custom GPTs' Vulnerabilities in the OpenAI Ecosystem

Authors: Sunday Oyinlola Ogundoyin, Muhammad Ikram 0001, Hassan Jameel Asghar, Benjamin Zi Hao Zhao, Dali Kaafar

Source: CoRR.

Subject Terms: FOS: Computer and information sciences, Computer Science - Machine Learning, Computer Science - Cryptography and Security, Computer Science - Computation and Language, Artificial Intelligence (cs.AI), Computer Science - Artificial Intelligence, Cryptography and Security (cs.CR), Computation and Language (cs.CL), Machine Learning (cs.LG)

Access URL: http://arxiv.org/abs/2505.08148

Privacy-Preserving IoT in Connected Aircraft Cabin

Authors: Nilesh Vyas, Benjamin Zi Hao Zhao, Aygün Baltaci, Gustavo de Carvalho Bertoli, Hassan Asghar 0001, Markus Klügel, Gerrit Schramm, Martin Kubisch, Dali Kaafar

Source: CoRR.

Subject Terms: Networking and Internet Architecture (cs.NI), FOS: Computer and information sciences, Cryptography and Security, Networking and Internet Architecture, Distributed, Parallel, and Cluster Computing, Distributed, Parallel, and Cluster Computing (cs.DC), Cryptography and Security (cs.CR)

Access URL: http://arxiv.org/abs/2511.15278

A Blockchain-enabled Anonymous-yet- Traceable Distributed Key Generation

Authors: Marina Dehez-Clementi, Jérôme Lacan, Jean-Christophe Deneuville, Hassan Asghar 0001, Dali Kaafar

Contributors: Ecole Nationale de l'Aviation Civile - ENAC (FRANCE), Institut Supérieur de l'Aéronautique et de l'Espace - ISAE-SUPAERO (FRANCE), Macquarie University (AUSTRALIA)

Source: 2021 IEEE International Conference on Blockchain (Blockchain). :257-265

Subject Terms: Autre, Sidechain, Secret sharing, Anonymity-accountability tradeoff

File Description: application/pdf

Access URL: https://oatao.univ-toulouse.fr/29332/

DDoD: Dual Denial of Decision Attacks on Human-AI Teams

Authors: Benjamin Tag, Niels van Berkel, Sunny Verma, Benjamin Zi Hao Zhao, Shlomo Berkovsky, Dali Kaafar, Vassilis Kostakos, Olga Ohrimenko

Source: Tag, B, van Berkel, N, Verma, S, Zhao, B Z H, Berkovsky, S, Kaafar, D, Kostakos, V & Ohrimenko, O 2023, 'DDoD: Dual Denial of Decision Attacks on Human-AI Teams', IEEE Pervasive Computing, vol. 22, no. 1, pp. 77-84. https://doi.org/10.1109/MPRV.2022.3218773

Subject Terms: FOS: Computer and information sciences, Artificial intelligence, Computer Science - Machine Learning, Training data, Computer Science - Artificial Intelligence, 05 social sciences, Data models, Uncertainty, Computer Science - Human-Computer Interaction, 02 engineering and technology, Human-Computer Interaction (cs.HC), Machine Learning (cs.LG), Predictive models, Artificial Intelligence (cs.AI), Task analysis, 0202 electrical engineering, electronic engineering, information engineering, Training, 0501 psychology and cognitive sciences

File Description: application/pdf

Access URL: http://arxiv.org/abs/2212.03980
https://vbn.aau.dk/da/publications/4afff8e4-187d-4769-b97d-ea1775558d0b
https://vbn.aau.dk/ws/files/536319458/DDoD_Dual_Denial_of_Decision_Attacks_on_Human_AI_Teams.pdf
https://doi.org/10.1109/MPRV.2022.3218773
https://www.scopus.com/pages/publications/85149375614

DDCA: A Distortion Drift-Based Cost Assignment Method for Adaptive Video Steganography in the Transform Domain

Authors: Yi Chen, Hongxia Wang, Kim-Kwang Raymond Choo, Peisong He, Zoran Salcic, Dali Kaafar, Xuyun Zhang

Source: IEEE Transactions on Dependable and Secure Computing. 19:2405-2420

Subject Terms: 0211 other engineering and technologies, 0202 electrical engineering, electronic engineering, information engineering, 02 engineering and technology