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Michael Fu

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#software testing Book Oct 2026

InsightQL: A Unified Code Database for Fuzz Blocker Analysis

Fuzzing is a highly effective automated testing method for uncovering software vulnerabilities. Despite advances in fuzzing techniques, many fuzzers still struggle with coverage plateaus caused by fuzz blockers, which limit their ability to discover deeper vulnerabilities. We introduce InsightQL, the first human-assist...

Wen-Tao Gao, Renata Borovica-Gajic, Sang Kil Cha et al. · 0 citations
Preprint Sep 2026

XAgent: eXecution-guided Agentic AI for Effective Localization and Resolution of GitHub Issues

This work presents XAgent, an execution-guided agentic framework that analyzes dynamic behavior and additional program context to localize and validate issues, opening new opportunities for LLM-based coding agents to achieve more robust and generalizable software maintenance.

H. Huynh, Patanamon Thongtanunam, Michael Fu et al. · 0 citations
Jul 2026

SkillGate: Cost Efficient Runtime Malicious Skill File Detection in Coding Agents

SkillGate, a deployable security gateway that screens AI skill packages before coding agent installation is presented, and four research questions covering detection effectiveness, screening cost, runtime overhead, and false positive behavior on the SkillsBench benchmark against two existing tools are answered.

Rui Yang, Michael Fu, C. Tantithamthavorn et al. · 1 citation
Preprint Aug 2026

Towards a Risk Assessment of Malicious Skill Files in Coding Agents

An adversarial skill-synthesis method using six LLMs across four families to transform 471 real-world shell commands into benign-appearing skills, released as a benchmark of 2,826 skills mapped to 11 MITRE ATT&CK tactics.

Rui Yang, Michael Fu, Kla Tantithamthavorn et al. · 0 citations

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