Eren Gözaydın

Eren Gözaydın is an Independent Cybersecurity Consultant and Senior Penetration Tester based in Türkiye, serving international clients across remote offensive security engagements. Over a career spanning nearly two decades in information technology and cybersecurity, he has combined hands-on systems engineering, offensive vulnerability research, and executive security leadership to help organizations harden critical digital assets against sophisticated threat actors.

Before focusing exclusively on offensive security and cybersecurity consulting, Eren spent over eight years in enterprise IT and systems administration. That operational foundation shapes his consulting methodology today: he understands the realities of legacy technical debt, production uptime constraints, deployment pipelines, and multi-tier architectures from the perspective of the engineers responsible for maintaining them.

In his offensive practice, Eren conducts manual penetration testing across complex web applications, APIs, mobile applications (Android and iOS), corporate networks, and Windows Active Directory infrastructures. His work emphasizes the vulnerabilities that automated tools routinely miss—broken object-level authorization (BOLA/IDOR), authentication state manipulation, insecure mobile runtime storage, Kerberos delegation abuse, and multi-hop lateral movement across segmented networks. His practical mastery has been validated through some of the industry's most demanding hands-on examinations, including earning EC-Council's elite Licensed Penetration Tester (LPT Master) and Certified Penetration Testing Professional (CPENT) designations, INE Security's Web Application Penetration Tester eXtreme (eWPTX), Mobile Application Penetration Tester (eMAPT), and Certified Professional Penetration Tester (eCPPTv2), 8kSec's Certified Mobile Security Engineer (CMSE), and Altered Security / Pentester Academy's Certified Red Team Professional (CRTP).

Beyond credentialed assessments, Eren is an active vulnerability researcher. He is the credited discoverer of three publicly tracked SQL injection vulnerabilities (CVE-2022-27927, CVE-2022-28079, and CVE-2022-28080) indexed in the NIST National Vulnerability Database and MITRE CVE records, and was inducted into NASA's Vulnerability Disclosure Program (VDP) Hall of Fame in November 2024 for responsibly reporting security flaws affecting NASA digital assets. Earlier, in January 2022, he achieved 5th place worldwide on the EC-Council Global Ethical Hacker Leaderboard, and he also serves the community as an EC-Council Cybersecurity Career Mentor and TSE-recognized Senior Penetration Testing Specialist.

As Co-Founder and executive leader at MetaGuard, and bolstered by EC-Council's Associate Certified Chief Information Security Officer (Associate C|CISO) credential, Blockchain Council's Certified Blockchain Security Professional (CBSP) designation, and degrees in both Computer Technologies & Programming (Mersin University) and Business & Management (Anadolu University), Eren brings strategic maturity to every engagement. Whether advising a CTO on pre-release API security, executing an Active Directory attack-path assessment, or guiding an engineering team through post-test remediation verification, his focus remains constant: delivering clear, reproducible technical evidence that translates directly into measurable business risk reduction.