Ayyappan Rajesh
Offensive Security Engineer @ Block Harbor Cybersecurity | OSCP+ | 3x CVE’s | NYU Cyber Fellow
- Role
- Offensive Security Engineer at Block Harbor Cybersecurity
- Location
- Detroit, MI, US
- LinkedIn followers
- 500 followers
Experience
Offensive Security Engineer
Jul 2024 — Present · Detroit, MI, US
Cybersecurity Advisory & Client Engagement: Provided strategic security guidance and led over 50 penetration tests for a diverse portfolio of clients across connected vehicles, web/mobile applications, and automotive IoT. Collaborated with clients to translate complex technical findings into business risk, manage project timelines, and deliver solutions that aligned with strategic objectives.Red Team Operations & Defensive Collaboration: Planned, led, and executed full-scope red team assessments to test organizational defenses. Worked directly with Security Operations Centers (SOCs) to improve their detection capabilities, enhance observability, and strengthen incident response procedures based on real-world attack scenarios.Advanced Methodology & Tooling Development: Developed and refined cutting-edge penetration testing methodologies, including end-to-end security evaluations of complex Cyber-Physical Systems and specialized cellular security assessments (GSM to 5G). Automated key processes to increase the efficiency and scalability of security engagements.Project Leadership & Stakeholder Management: Managed critical security projects for Fortune 500 companies. This included leading deep-dive mobile application and API penetration testing, along with comprehensive source code reviews. Engaged with both technical development teams and senior stakeholders to ensure effective vulnerability remediation and secure development practices.
Education
University of Massachusetts Dartmouth
Bachelor of Science - BS, Computer Engineering
NYU Tandon School of Engineering
Master's degree, Cybersecurity
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