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Liu
@seceng_liu
Cybersecurity Specialist 8 Years 1000 Systems Tested
China
English
About me
Responsible for penetration testing and security assessments of over 1,000 systems, including web applications, servers, and AI/ML platforms. Identified and helped remediate critical vulnerabilities for dozens of small and medium businesses, improving their overall security posture.I have participated in multiple international cybersecurity offensive and defensive exercises, simulating real-world attack scenarios to test and improve the security resilience of enterprise systems.
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Liu
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Average response time: 1 hour
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Programming & Tech
I will penetration testing and vulnerability assessment
Portfolio
Work experience
Cybersecurity Engineer
CybersecurityAuditors
Jun 2016 - May 2026 • 9 yrs 11 mos
As a cybersecurity engineer with over 8 years of hands-on experience, I specialized in penetration testing, vulnerability assessment, and network security hardening for enterprise clients. I have led and delivered over 30 projects, identifying and remediating critical security flaws to strengthen defenses against potential cyberattacks. Beyond core security tasks, I also developed custom security scripts, integrated AI-powered tools for threat detection, and organized detailed technical security documentation. My work has helped clients reduce security risks by over 70% and ensure compliance with industry standards.
