Ruofan Liu's Personal Website

👋 Welcome to Liu Ruofan, 刘若凡's Homepage

2024.10 - Present. Research Fellow in Computer Science, National University of Singapore (NUS). Research Interest: AI for Web Security.
2021.01 - 2024.10. Ph.D. in Computer Science, National University of Singapore (NUS). Supervisor: Prof. Dong Jin Song.
2016.08 - 2020.06. B.S. in Statistics, National University of Singapore (NUS). FYP Supervisor: Prof. Alexandre Thiéry.

2025.07: 🏆 Our project "Trusted Detection and Situational Analysis of Global Phishing Attacks in the AI Era" won the First Place in China International College Students' Innovation Competition Southeast Asia Division. Congratulations to Xiwen! Link to the official annoucements .

ISSTA 2025
Ruofan Liu, Xiwen Teoh, Yun Lin, Guanjie Chen, Ruofei Ren, Denys Poshyvanyk, and Jin Song Dong.
GUIPilot: A Consistency-based Mobile GUI Testing Approach for Detecting Application-specific Bugs.
[Paper] [Code] [Video]
USENIX Security 2024
Ruofan Liu, Yun Lin, Xiwen Teoh, Gongshen Liu, Zhiyong Huang, and Jin Song Dong.
Less Defined Knowledge and More True Alarms: Reference-based Phishing Detection without a Pre-defined Reference List.
[Paper] [Code] [Video]

USENIX Security 2024
Xiwen Teoh, Yun Lin, Ruofan Liu, Zhiyong Huang and Jin Song Dong.
PhishDecloaker: Detecting CAPTCHA-cloaked Phishing Websites via Hybrid Vision-based Interactive Models.
[Paper] [Code] [Video]

USENIX Security 2023
Ruofan Liu, Yun Lin, Yifan Zhang, Penn Han Lee, and Jin Song Dong.
Knowledge Expansion and Counterfactual Interaction for Reference-Based Phishing Detection.
[Paper] [Code] [Video]

USENIX Security 2022
Ruofan Liu, Yun Lin, Xianglin Yang, Siang Hwee Ng, Dinil Mon Divakaran, Jin Song Dong.
Inferring Phishing Intention via Webpage Appearance and Dynamics: A Deep Vision Based Approach.
[Paper] [Code] [Video]

USENIX Security 2021
Yun Lin#, Ruofan Liu#, Dinil Mon Divakaran, Jun Yang Ng, Qing Zhou Chan, Yiwen Lu, Yuxuan Si, Fan Zhang, Jin Song Dong.
Phishpedia: A Hybrid Deep Learning Based Approach to Visually Identify Phishing Webpages.
[Paper] [Code] [Video]

Phishpedia: 1st referenced-based phishing website detector.
PhishIntention: Reference-based phishing detector with both the brand intention and credential-taking intention.
DynaPhish: A complementary module for all reference-based phishing detectors with brand knowledge expansion and counterfactual interaction.
PhishLLM: A LLM-empowered phishing detector.
Influence4Metric: An influence-function-based explanation and debugging tool for Deep Metric Learning Tasks.

2025. China International College Students’ Innovation Competition 2025 Silver Medal
中国国际大学生创新大赛2025（互联网+）国际项目全国银奖（全国前0.01%）

2025. China International College Students’ Innovation Competition 2025 (SEA) First Place
中国国际大学生创新大赛2025（互联网+）国际项目东南亚赛区第一名

2024. China International College Students’ Innovation Competition 2024 Bronze Medal
中国国际大学生创新大赛2024（互联网+）国际项目全国铜奖（全国前0.04%）

2024. China International College Students’ Innovation Competition 2024 (Shanghai) Silver Medal
中国国际大学生创新大赛2024（互联网+）国际项目（上海赛区）专项赛银奖

2024. National University of Singapore Dean's Graduate Research Excellence Award

2021. National University of Singapore Research Achievement Award in 2021/2022 Sem 1

2020. Top 1 student in NUS Statistics Batch 2020

2020. Lijen Industrial Development Medal (Best Academic Exercise/Projects in the Discipline) in Academic Year 2019

2020. NTUC Medal in Academic Year 2019

2020. Saw Swee Hock Gold Medal in the Academic Year 2019

2020. SNAS Award 2020 (Singapore National Academy of Science)

2025. Yun Lin, Guanjie Chen, Ruofei Ren, Ruofan Liu, Xiwen Teoh, Yuting Chen, Feng Yu, We Huang, Jinming Li, Liuhua Gong, Lili Gu. GUI Software Testing System and Method Based on Requirement Design Drafts. CN202510267792.7
2020. Yun Lin, Ruofan Liu, Dinil Mon Divakaran, Jun Yang Ng, and Jin Song Dong. Phishpedia: Towards an Approach of Phishing Identification with Visual Explanation. Provisional patent filed in Singapore (Trustwave, Singtel). NO. 10202011155P

2026. Reviewer for the AAAI 2026.
2025. Senior PC for the CIKM 2025.
2025. Reviewer for the NeurIPS 2025.
2024. Reviewer for the Transactions on Information Forensics & Security.
2023. Reviewer for the 28th IEEE Pacific Rim International Symposium on Dependable Computing.

Email: liu.ruofan16[at]u[dot]nus[dot]edu