Feei
Research Scientist at Alipay
Hangzhou City, Zhejiang, China
Summary
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RockstarFeei is a research scientist and security researcher based in Hangzhou with 11 years of hands-on experience building backend tools for security and code auditing. They design and implement high-performance Python tooling—such as an async DNS subdomain enumerator (ESD) supporting RSC and DNS transfer checks—and improve sensitive-information leakage detection for GitHub monitoring. Feei’s work spans source code security audit platforms where they enhanced APIs, task processing, and engine logic to boost maintainability and effectiveness. Comfortable across the stack, they focus on practical security features like token verification and exclusion rules that reduce false positives. Known for pragmatic refactors and core-engine improvements, Feei combines research rigor with production-grade engineering to close the gap between vulnerability discovery and actionable remediation.
11 years of coding experience
Github Skills (26)
asynchronous10
back-end-development10
apidoc10
python10
async10
security-scanner10
enumeration10
security10
php10
api10
dns10
enumerate10
security-scan10
flask-ask9
flask9
Programming languages (11)
Github contributions (5)
FeeiCN/GSIL
Oct 2017 - Oct 2021
GitHub Sensitive Information Leakage（GitHub敏感信息泄露监控）
Role in this project:
Security Engineer
Security EngineerContributions:82 commits, 11 PRs, 77 pushes in 4 years
Contributions summary:Feei's commits primarily focus on enhancing the security aspects of the repository. They implemented and improved sensitive information leakage detection by modifying the configuration files and core engine. The user also added features for verifying token validity and improved the exclusion rules to filter out irrelevant findings, ensuring the system efficiently identifies potential security vulnerabilities. This suggests a focused effort on refining the project's core function: security scanning.
security-toolssecuritysensitive-dataleakagesensitive
FeeiCN/ESD
Feb 2018 - Dec 2021
Enumeration sub domains(枚举子域名)
Role in this project:Back-end Developer
Back-end DeveloperContributions:1 release, 121 commits, 45 PRs in 3 years 9 months
Contributions summary:Feei developed the core functionality for enumerating subdomains. They implemented a Python script, `ESD.py`, utilizing asynchronous DNS resolution with aiodns. Their contributions involved loading subdomain dictionaries, querying DNS servers, and generating output files. The user also added support for scanning multiple domains, implemented features for RSC (Response Similarity Comparison) and included DNS Transfer vulnerability checks, expanding the capabilities of the tool.
pythondnsbugbountysecuritypenetration-testing
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