Phuong Cao is a Research Scientist at the National Center for Supercomputing Applications (NCSA) at the University of Illinois Urbana-Champaign (UIUC). His research focuses on making AI for Science reliable and secure. His work spans cross-stack supercomputing architectures, e.g., GPUs, quantum computing, and spaceflight systems, protecting open-science applications against cyberattacks and hardware failures on leadership computing facilities.

As Principal Investigator of National Science Foundation (NSF) grants, he curates data lakes, measures post-quantum cryptography adoption, and verifies federated authentication across open-science networks. Collaborations with DOE national labs (Argonne), NSF testbeds (FABRIC and National Research Platform), and industry (IBM Research) have resulted in publications in USENIX Security, NSDI, Supercomputing, DSN (Best Paper Award), QCE, and CoNEXt, with resilience models being adopted in exascale supercomputers.

Research Thrusts & Awarded Grants


Thrust 1: AI/HPC Systems Resilience (GPUs & QPUs)

Characterizing hardware fault propagation, transient errors, and security vulnerabilities across petascale/exascale GPU & hybrid HPC-quantum systems.

Grant: NSF #2430244
Pubs: [2, 3, 9, 14]

Thrust 2: Post-Quantum & Network Security

Deploying network instruments for PQC adoption measurement & verifying federated SSO authentication on FABRIC and DeltaAI testbeds.

Grants: NSF #2430244, #2319190
Pubs: [4, 5, 6, 10, 12]

Thrust 3: AI Security Data Lakes & Auditing

Real-time AI security data lakes (AICyberLake) and continuous auditing models (CAUDIT) to detect lateral movement and HPC abuse.

Grants: NSF #2613388, #2530738, #2537355
Pubs: [1, 5, 6, 7, 8, 15]

Research Activities

Research Agenda


Realizing resilient and secure supercomputing systems to advance open-science research, in the presence of accidental failures and cyber-attacks is his research goal. The key driver is cross-stack measurements of high-speed interconnects, AI application logs, and kernel probes from sustained petascale supercomputers (Blue Waters), HPC/GPU clusters (DeltaAI). These decade-long curated data (1PB) enables cyberattack detection, error propagation modeling across GPU architectures (Hopper/Blackwell/Rubin) and vendors, and understanding of quantum-resistant cryptography adoption, published in top conferences such as Supercomputing, USENIX Security, and IEEE Quantum Computing and Engineering. He is investigating reliability and security challenges of next-generation accelerators such as Quantum Processing Units (QPU) being integrated with HPC.

Publications

BibTeX logo   

[1] Generative active adaptation for drifting and imbalanced network intrusion detection
Ragini Gupta, Shinan Liu, Ruixiao Zhang, Xinyue Hu, Xiaoyang Wang, Hadjer Benkraouda, Pranav Kommaraju, Phuong Cao, Nick Feamster, Klara Nahrstedt
ACM Conference on Emerging Networking Experiments and Technologies (ACM CoNEXT 2026)
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[2] Network Impact of Post-Quantum Certificate Chain sizes on Time to First Byte in TLS Deployments
Matthew Chou, Phuong M. Cao
IEEE International Conference on Quantum Computing and Engineering (IEEE QCE 2026)
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[3] Story of Two GPUs: Characterizing the Resilience of Hopper H100 and Ampere A100 GPUs
Shengkun Cui, Archit Patke, Hung Nguyen, Aditya Ranjan, Ziheng Chen,
Phuong Cao, Brett Bode, Gregory Bauer, Catello Di Martino, Saurabh Jha, Chandra Narayanaswami, Daby Sow, Zbigniew Kalbarczyk, Ravishankar Iyer
Supercomputing '25
PDF icon Artifacts Available badge

[4] Post-Quantum Cryptography (PQC) Network Instrument: Measuring PQC Adoption Rates and Identifying Migration Pathways
Jakub Sowa, Bach Hoang, Advaith Yeluru, Steven Qie, Anita Nikolich, Ravishankar Iyer, Phuong M. Cao
IEEE International Conference on Quantum Computing and Engineering (QCE)
PDF icon Award icon www.pqsee.com

[5] True Attacks, Attack Attempts, or Benign Triggers? An Empirical Measurement of Network Alerts in a Security Operations Center
Limin Yang, Zhi Chen, Chenkai Wang, Zhenning Zhang, Sushruth Booma, Phuong M. Cao, Constantin Adam, Alex Withers, Zbigniew Kalbarczyk, Ravishankar K. Iyer, Gang Wang
33rd USENIX Security Symposium
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[6] CAUDIT: Continuous Auditing of SSH-Servers To Mitigate Brute-Force Attacks
Phuong M. Cao, Yuming Wu, Subho Banerjee, Alex Withers, Justin Azoff, Zbigniew Kalbarczyk, Ravishankar Iyer
USENIX Symposium on Networked Systems Design and Implementation (NSDI), 2019
PDF icon   Talk   Press

[7] stealthML: Data-driven Malware for Stealthy Data Exfiltration
Keywhan Chung, Phuong M. Cao, Zbigniew Kalbarczyk, Ravishankar K Iyer
IEEE International Conference on Cyber Security and Resilience, 2023
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[8] Preemptive intrusion detection: theoretical framework and real-world measurements
Phuong M. Cao, Eric Badger, Adam Slagell, Zbigniew Kalbarczyk, Ravishankar Iyer
ACM Symposium and Bootcamp on the Science of Security (HotSOS), 2015
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[9] Security Monitoring for Virtual Machines Using Hardware Architectural Invariants
Cuong Pham, Zachary Estrada, Phuong M. Cao, Zbigniew Kalbarczyk, and Ravishankar Iyer
IEEE Conference on Dependable Systems and Networks (DSN), 2014 (Best Paper Award)
PDF icon Best paper badge

[10] SVAuth: A Single-Sign-On Integration Solution with Runtime Verification
Shuo Chen, Matt McCutchen, Phuong M. Cao, Shaz Qadeer, and Ravishankar Iyer
International Conference on Runtime Verification (RV), 2017
PDF icon   Blackhat Europe presentation

[11] Building Reliable and Secure Virtual Machines Using Architectural Invariants
Cuong Pham, Zachary Estrada, Phuong M. Cao, Zbigniew Kalbarczyk, and Ravishankar Iyer
IEEE Security and Privacy (S&P) Magazine, 2014
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Workshops, Short Papers, and Magazine Articles

[14] A benchmark of expert-level academic questions to assess AI capabilities
Center for AI Safety, Scale AI & HLE Contributors Consortium
Nature
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[12] On the Extreme Variance of Certified Local Robustness Across Model Seeds
Minh Le, Phuong M. Cao
IEEE/IFIP International Conference on Dependable Systems and Networks Workshops (IEEE DSN-W 2026)
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[13] KNEESENSE: a low-cost wearable system with hydraulic filament sensing for real-time knee rehabilitation monitoring
Nhu An Phan, Sy Trung Ngo, Minh Tri Phan, Nghiep Quy Duong, Phuoc Thien Phan, Thanh Nho Do, Phuong M. Cao, Girish Krishnan, Elizabeth T. Hsiao-Wecksler, Mai Thanh Thai
Nature Scientific Reports 16 (1), 12572 (2026)
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[15] Predicting ICU Admissions for Hospitalized COVID-19 Patients with a Factor Graph-based Model
Yurui Cao, Phuong M. Cao, Haotian Chen, Karl M. Kochendorfer, Andrew B. Trotter, William L. Galanter, Paul M. Arnold, Ravishankar K Iyer
AAAI-22 Health Intelligence Workshop
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[16] Post-Quantum Cyberinfrastructure Security Readiness: Risks, Measures and Prospects
Phuong M. Cao, Bach Hoang, Santiago Nunez-Corrales
ASCR Workshop on Basic Research Needs in Quantum Computing and Networking, Department of Energy, (Position Paper), 2023.
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[17] Investigating Root Causes of Authentication Failures Using a SAML and OIDC Observatory
Jim Basney, Phuong M. Cao, Terry Fleury
IEEE DependSys 2020
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[18] Mining Threat Intelligence from Billion-scale SSH Brute-Force Attacks
Yuming Wu, Phuong M. Cao, Alex Withers, Zbigniew Kalbarczyk, Ravishankar Iyer
Workshop on Decentralized IoT Systems and Security, co-located with NDSS, 2020
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[19] Toward a high availability cloud: Techniques and challenges
Cuong Pham, Phuong M. Cao, Zbigniew Kalbarczyk, and Ravishankar Iyer
IEEE International Conference on Dependable Systems and Networks (DSN), 2012
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[20] Taxonomy of Fingerprinting Techniques for Evaluation of Smart Grid Honeypot Realism
Vanessa Tay, Xinran Li, Daisuke Mashima, Bennet Ng, Phuong M. Cao, Zbigniew Kalbarczyk, Ravishankar K Iyer
IEEE International Conference on Smart Grid Communications (SmartGridComm), 2023
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Photo of Phuong M. Cao

Professional Services

2026 Program Committee:
Intl Conference on Supercomputing (ICS)
Quantum Computing and Engineering (QCE)
Dependable Systems and Networks (DSN)
2025- Reviewer:
Department of Energy (DOE)
National Artificial Intelligence Research Resource (NAIRR) Pilot
2023- Proposal Panelist:
National Science Foundation (NSF)
Awards

2025 Steven Ashby Prize in Computational Science, Honorable Mention
2024 Art of HPC exhibit at the International Conference for High Performance Computing, Networking, Storage and Analysis (SC)
2024 Jerry Fiddler Innovation Award, Outstanding Mentor
2023 Trusted Cyber Infrastructure (CI) Fellows,
U.S. National Science Foundation (NSF) Cybersecurity Center of Excellence
2023 Best Paper Award,
44th IEEE/IFIP International Conference on Dependable Systems and Networks (DSN)
Talks

Nov
2025
Characterizing GPU Resilience on AI/HPC
Supercomputing, St. Louis, MO
Oct
2025
Post Quantum Cryptography Risk in Science
National Center for Atmospheric Research Boulder, CO
Oct
2025
Security Data Lake in Cyberinfrastructure
National Institute of Standards and Technology
Rockville, MD
Nov
2024
Jupyter Notebook Security Taxonomy
Supercomputing, Atlanta, GA
Oct
2023
Security Log Analyses
Berkeley Lab, CA
Professional Associations

Trusted CI Fellow NSF Cybersecurity Center of Excellence
Member Joint Laboratory for Extreme Scale Computing (JLESC)
Member Quantum Technical Community, IEEE Computer Society
Member ACM SIGHPC
Member SIAM
Students & Mentees

Joel Jothiprakasam JPL
Neil Rayu Sandia
Advaith Yeluru Microsoft
Hung Nguyen Argonne
Jakub Sowa KPMG → Undisclosed
Bach Hoang Georgia Tech
Victoria Zhang UIUC
Audrey Feng Dartmouth
Matthew Chow Stanford (visiting)
Collaborators

Keywhan Chung LLNL
Edo Giusto Univ. of Naples / Helix42
Daisuke Mashima Singapore University of Technology and Design (SUTD)
Zachary J Estrada MIT Lincoln Laboratory
Santiago Núñez-Corrales ORNL
Alex Withers ESnet
Adam Slagell ESnet
Saurabh Jha IBM
Subho Banerjee Google
Haoran Qiu Microsoft
Shuo Chen Microsoft
Archit Patke SpaceXAI
Hieu Pham VinUni
Anita Nikolich iSchool UIUC
Shengkun Cui UIUC
Gang Wang UIUC
Klara Nahrstedt UIUC
Sponsors

 
Contact

National Center for Supercomputing Applications
1205 W. Clark St.
Urbana, IL 61801
Direction NCSA building exterior

Email: pcao3@illinois.edu

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