SeQR: A User-Friendly and Secure-by-Design Configurator for Enterprise Wi-Fi
S Mahmudul Hasan; Che Wei Tu; Endadul Hoque; Omar Chowdhury; Sze Yiu Chau
[The ACM CHI conference on Human Factors in Computing Systems (CHI) 2025] (Paper)

On the Unnecessary Complexity of Names in X.509 and Their Impact on Implementations
Yuteng Sun; Joyanta Debnath; Wenzheng Hong; Omar Chowdhury; Sze Yiu Chau
[The ACM International Conference on the Foundations of Software Engineering (FSE) 2025] (Paper)

• CVE entries assigned:
  • CVE-2023-52892 in phpseclib (CVSS v3 score: 7.5 High Severity)
  • CVE-2024-5991 in wolfSSL (CVSS v3 score: 7.5 High Severity)

DSKE: Digital Signatures with Key Extraction
Zhipeng Wang; Orestis Alpos; Alireza Kavousi; Harry W. H. Wong; Sze Yiu Chau; Duc V. Le; Christian Cachin
[The Cryptographers' Track at RSA Conference (CT-RSA) 2025] (Paper)

A Multifaceted Study on the Use of TLS and Auto-detect in Email Ecosystems
Ka Fun Tang; Che Wei Tu; Sui Ling Angela Mak; Sze Yiu Chau
[Network and Distributed System Security (NDSS) Symposium 2025] (Paper)

ARMOR: A Formally Verified Implementation of X.509 Certificate Chain Validation
Joyanta Debnath; Christa Jenkins; Yuteng Sun; Sze Yiu Chau; Omar Chowdhury
[IEEE Symposium on Security and Privacy (S&P) 2024] (Paper)

Understanding Impacts Of Electromagnetic Signal Injection Attacks On Object Detection
Youqian Zhang; Chunxi Yang; Eugene Y. Fu; Qinhong Jiang; Chen Yan; Sze Yiu Chau; Grace Ngai; Hong-Va Leong; Xiapu Luo; Wenyuan Xu
[2024 IEEE International Conference on Multimedia and Expo (ICME)] (Paper)

Investigating TLS Version Downgrade in Enterprise Software
Ka Fun Tang; Ka Lok Wu; Sze Yiu Chau
[The 14th ACM Conference on Data and Application Security and Privacy (CODASPY) 2024] (Paper)

Towards Precise Reporting of Cryptographic Misuses
Yikang Chen; Yibo Liu; Ka Lok Wu; Duc V. Le; Sze Yiu Chau
[The Network and Distributed System Security (NDSS) Symposium 2024] (Paper|Talk)

The Devil is in the Details: Hidden Problems of Client-side Enterprise Wi-Fi Configurators
Ka Lok Wu; Man Hong Hue; Ka Fun Tang; Sze Yiu Chau
[The 16th ACM Conference on Security and Privacy in Wireless and Mobile Networks (WiSec 2023)] (Paper|Talk)
※ Best Paper Award from ACM WiSec '23

• CVE entries assigned:
  • [CVE ID to be confirmed] in ChromeOS
  • CVE-2023-20965 in Android (CVSS v3 score: 9.8 Critical Severity)

Back to School: On the (In)Security of Academic VPNs
Ka Lok Wu; Man Hong Hue; Ngai Man Poon; Kin Man Leung; Wai Yin Po; Kin Ting Wong; Sze Ho Hui; Sze Yiu Chau
[The 32nd USENIX Security Symposium (USENIX Security 2023)] (Paper)

• CVE entries assigned:
  • CVE-2022-20145 in Android (CVSS v3 score: 9.8 Critical Severity)
  • CVE-2022-3761 in OpenVPN Connect for macOS and Windows (CVSS v3 score: 5.9 Medium Severity)
  • CVE-2022-23678 in Aruba VIA (CVSS v3 score: 5.9 Medium Severity)
  • CVE-2022-45856 in FortiClient (CVSS v3 score: 5.9 Medium Severity)

Morpheus: Bringing The (PKCS) One To Meet the Oracle
Moosa Yahyazadeh; Sze Yiu Chau; Li Li; Man Hong Hue; Joyanta Debnath; Sheung Chiu Ip; Chun Ngai Li; Endadul Hoque; Omar Chowdhury
[The 28th ACM Conference on Computer and Communications Security (CCS 2021)] (Paper|Talk)

• CVE entries assigned:
  • CVE-2020-36315 in RELIC (CVSS v3 score: 5.3 Medium Severity)
  • CVE-2020-36316 in RELIC (CVSS v3 score: 5.5 Medium Severity)
  • CVE-2021-30004 in wpa_supplicant (CVSS v3 score: 5.3 Medium Severity)
  • CVE-2021-30130 in phpseclib (CVSS v3 score: 7.5 High Severity)
  • CVE-2021-30246 in jsrsasign (CVSS v3 score: 9.1 Critical Severity)
  • CVE-2022-24771 in node-forge (CVSS v3 score: 7.5 Medium Severity)
  • CVE-2022-24772 in node-forge (CVSS v3 score: 7.5 Medium Severity)
  • CVE-2022-24773 in node-forge (CVSS v3 score: 5.3 Medium Severity)

On Reengineering the X.509 PKI with Executable Specification for Better Implementation Guarantees
Joyanta Debnath; Sze Yiu Chau; Omar Chowdhury
[The 28th ACM Conference on Computer and Communications Security (CCS 2021)] (Paper|Talk)
※ Best Paper Award Runner-Up from ACM CCS 2021

All your credentials are belong to us: On Insecure WPA2-Enterprise Configurations
Man Hong Hue; Joyanta Debnath; Kin Man Leung; Li Li; Mohsen Minaei; M. Hammad Mazhar; Kailiang Xian; Endadul Hoque; Omar Chowdhury; Sze Yiu Chau
[The 28th ACM Conference on Computer and Communications Security (CCS 2021)] (Paper|Talk)
※ CUEngineering Jul 2022 Issue 19 coverage

• CVE entries assigned:
  • CVE-2020-27055 in Android (CVSS v3 score: 7.5 High Severity)
  • CVE-2021-21212 in Chrome OS (CVSS v3 score: 6.5 Medium Severity)
  • CVE-2021-37964 in Chrome OS (CVSS v3 score: 3.3 Low Severity)

Monet: Impressionism as A Defense Against Adversarial Examples
Huangyi Ge; Sze Yiu Chau; Ninghui Li
[The 2nd IEEE International Conference on Trust, Privacy and Security in Intelligent Systems,
and Applications (IEEE TPS-ISA 2020)] (Paper)

When TLS Meets Proxy on Mobile
Joyanta Debnath; Sze Yiu Chau; Omar Chowdhury
[The 18th International Conference on Applied Cryptography and Network Security (ACNS 2020)] (Paper)
※ Best Student Paper Award from ACNS 2020

Random Spiking and Systematic Evaluation of Defenses Against Adversarial Examples
Huangyi Ge; Sze Yiu Chau; Bruno Ribeiro; Ninghui Li
[The 10th ACM Conference on Data and Application Security and Privacy (CODASPY 2020)] (Paper)

Koinonia: Verifiable E-Voting with Long-term Privacy
Huangyi Ge; Sze Yiu Chau; Victor Gonsalves; Huian Li; Tianhao Wang; Xukai Zou; Ninghui Li
[The 35th Annual Computer Security Applications Conference (ACSAC 2019)] (Paper)

Analyzing Semantic Correctness with Symbolic Execution: A Case Study on PKCS#1 v1.5 Signature Verification
Sze Yiu Chau; Moosa Yahyazadeh; Omar Chowdhury; Aniket Kate; Ninghui Li
[The Network and Distributed System Security Symposium (NDSS) 2019] (Paper|Talk|Artifacts)
※ WIRED coverage

• CVE entries assigned to some of the bugs we found in implementations of RSA signature verification:
  • CVE-2018-15836 in Openswan (CVSS v3 score: 7.5 High Severity)
  • CVE-2018-16151 in strongSwan (CVSS v3 score: 7.5 High Severity)
  • CVE-2018-16152 in strongSwan (CVSS v3 score: 7.5 High Severity)
  • CVE-2018-16253 in axTLS Embedded SSL (CVSS v3 score: 5.9 Medium Severity)
  • CVE-2018-16150 in axTLS Embedded SSL (CVSS v3 score: 5.9 Medium Severity)
  • CVE-2018-16149 in axTLS Embedded SSL (CVSS v3 score: 5.9 Medium Severity)

Why Johnny Can’t Make Money With His Contents: Pitfalls of Designing and Implementing Content Delivery Apps
Sze Yiu Chau; Bincheng Wang; Jianxiong Wang; Omar Chowdhury; Aniket Kate; Ninghui Li
[The 34th Annual Computer Security Applications Conference (ACSAC 2018)] (Paper)

Adaptive Deterrence of DNS Cache Poisoning
Sze Yiu Chau; Omar Chowdhury; Victor Gonsalves; Huangyi Ge; Weining Yang; Sonia Fahmy; Ninghui Li
[The 14th EAI International Conference on Security and Privacy in Communication Networks (SecureComm 2018)] (Paper)

Analyzing Operational Behavior of Stateful Protocol Implementations for Detecting Semantic Bugs
Endadul Hoque; Omar Chowdhury; Sze Yiu Chau; Cristina Nita-Rotaru; Ninghui Li
[IEEE/IFIP International Conference on Dependable Systems and Networks (DSN) 2017] (Paper)

SymCerts: Practical Symbolic Execution For Exposing Noncompliance in X.509 Certificate Validation Implementations
Sze Yiu Chau; Omar Chowdhury; Endadul Hoque; Huangyi Ge; Aniket Kate; Cristina Nita-Rotaru; Ninghui Li
[IEEE Symposium on Security and Privacy (S&P) 2017] (Paper|Talk|Artifacts)
※ One of the 10 CSAW '17 (Applied Research) Finalists

• CVEs assigned to some of the bugs we found in various SSL/TLS libraries:
  • CVE-2017-1000415 in MatrixSSL (CVSS v3 Score: 5.9 Medium Severity)
  • CVE-2017-1000416 in axTLS Embedded SSL (CVSS v3 Score: 5.3 Medium Severity)
  • CVE-2017-1000417 in MatrixSSL (CVSS v3 Score: 5.3 Medium Severity)