Projects per year
Personal profile
Biography
I am a researcher in privacy, cryptography and information security:
Privacy :
* Quantifying privacy risks that may lead to user tracking
* Developing formal methods to assess privacy risks of released datasets
* Developing algorithms for differentially private access to data
Cryptography :
* Protocols for private outsourced computation Protocols for secure multiparty computation
* Constructing cryptographic primitives
* Cryptanalysis
Information security:
* Observation resistant authentication protocols for unaided humans
* Continuous/implicit authentication systems using behavioural biometrics
* Mathematical attacks on authentication protocols
My research has involved different areas of mathematics such as number theory, computational geometry, information theory, probability, statistics and combinatorics, as well as different areas of computer science such as cryptography, differential privacy, algorithms, computational complexity and machine learning.
External positions
Research Scientist, CSIRO
Apr 2014 → …
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Collaborations and top research areas from the last five years
Recent external collaboration on country/territory level. Dive into details by clicking on the dots or
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SQA 2024 Round 12: Sydney Quantum Academy Scholarship Asghar/Pham
Asghar, H. (Primary Chief Investigator) & Brennen, G. (Supervisor)
23/02/26 → 22/02/30
Project: Research
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Privacy Preserving Data Sensing Algorithms
Asghar, H. (Primary Chief Investigator) & Tyler, P. (Chief Investigator)
5/02/18 → 30/06/19
Project: Other
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MQCSH: Macquarie University Cyber Security Hub
Kaafar, D. (Primary Chief Investigator), Selvadurai, N. (Primary Chief Investigator), Wiggins, M. (Primary Chief Investigator), Sheedy, E. (Primary Chief Investigator), Asghar, H. (Chief Investigator), Ikram, M. (Chief Investigator), Shevchenko, P. (Chief Investigator), Berkovsky, S. (Chief Investigator), Bayl-Smith, P. (Chief Investigator), Zhang, X. (Chief Investigator), Yang, J. (Chief Investigator), Modabber-Moghadam, S. (Coordinating Investigator) & Goldbarsht, D. (Project Leader)
2/12/16 → 30/06/23
Project: Research
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dX-privacy for text and the curse of dimensionality
Asghar, H. J., Carpentier, R., Zhao, B. Z. H. & Kaafar, D., 2026, In: Proceedings on Privacy Enhancing Technologies. 2026, 1, p. 224-241 18 p.Research output: Contribution to journal › Article › peer-review
Open AccessFile4 Downloads (Pure) -
Efficient fault-tolerant quantum protocol for differential privacy in the shuffle model
Asghar, H., Mukherjee, A. & Brennen, G. K., 18 Mar 2026, In: Quantum Information Processing. 25, 4, p. 1-27 27 p., 104.Research output: Contribution to journal › Article › peer-review
Open AccessFile2 Downloads (Pure) -
Forget me, not my friends! Object unlearning based on scene graphs
Zhang, C., Zhao, B., Asghar, H., Wang, W., Liu, A. & Kaafar, D., 2026, WSDM '26: proceedings of the Nineteenth ACM International Conference on Web Search and Data Mining. New York, US: Association for Computing Machinery, p. 913-923 11 p.Research output: Chapter in Book/Report/Conference proceeding › Conference proceeding contribution › peer-review
Open AccessFile5 Downloads (Pure) -
Property-preserving hashing for l1-distance predicates: applications to countering adversarial input attacks
Asghar, H., Zhang, C. & Kaafar, D., 21 Apr 2026, (E-pub ahead of print) In: Cryptography and Communications.Research output: Contribution to journal › Article › peer-review
Open Access -
A large-scale empirical analysis of custom GPTs' vulnerabilities in the OpenAI ecosystem
Ogundoyin, S., Ikram, M., Asghar, H., Zhao, B. & Kaafar, D., 15 May 2025, (Submitted) p. 1-17. 17 p.Research output: Contribution to conference › Paper › peer-review
Prizes
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ACM AsiaCCS 2019 Best Paper Award
Zhao, B. Z. H. (Recipient), Ikram, M. (Recipient), Asghar, H. (Recipient), Kaafar, M. A. (Recipient), Abdelberi, C. (Recipient) & Thilakarathna, K. (Recipient), 10 Jul 2019
Prize: Other distinction
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Winner - Faculty of Science and Engineering Award for Inter-School Collaboration - 2023
Nayak, A. (Recipient), Mahmood, A. (Recipient), Beheshti, A. (Recipient), McIver, A. (Recipient), Bilgin, A. (Recipient), Liquet-Weiland, B. (Recipient), Svensson, C. (Recipient), Ramakrishnan, C. (Recipient), Smith, C. (Recipient), Molla-Aliod, D. (Recipient), Vatsalan, D. (Recipient), Xue, E. (Recipient), Gupta, G. (Recipient), Sofronov, G. (Recipient), Baker, G. (Recipient), Liu, G. (Recipient), Asghar, H. (Recipient), Doosti, H. (Recipient), Zhu, H. (Recipient), Jiang, I. (Recipient), Zheng, J. (Recipient), Lin, H. (Recipient), Wu, J. (Recipient), Ma, J. (Recipient), Binkowski, K. (Recipient), Dras, M. (Recipient), Manuguerra, M. (Recipient), Orgun, M. (Recipient), Lay, M. (Recipient), Zou, N. (Recipient), Kordzakhia, N. (Recipient), Busch, P. (Recipient), Graham, P. (Recipient), Schwitter, R. (Recipient), Chen, S. (Recipient), Smith, S. (Recipient), Cassidy, S. (Recipient), Prvan, T. (Recipient), Fung, T. (Recipient), Li, Y. (Recipient), Wang, Y. (Recipient), Zhang, Y. (Recipient) & Zhou, Y. (Recipient), 2023
Prize: Other distinction
Activities
- 1 Other
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Submission to the NSW Legislative Council Inquiry into Cybersecurity, Dali Kaafar, Hassan Jameel Asghar, Muhammad Ikram, Niloufer Selvadurai, 2020.
Kaafar, D. (Participant), Asghar, H. (Participant), Ikram, M. (Participant) & Selvadurai, N. (Participant)
2020Activity: Other