Portrait of Priyanshu Singh, Offensive Security Researcher

Hi, I'm Priyanshu Singh Offensive Security Researcher.

I investigate complex security flaws across web applications, APIs and low-level systems. My work spans reverse engineering, binary exploitation and vulnerability research, with a focus on uncovering weaknesses, demonstrating their technical impact and advancing responsible disclosure.

  • Exploit Development
  • Reverse Engineering
  • Web & API Security
  • Kernel Exploitation
Get in touchRead writeups

3x #1

HackerOne leaderboard placement

25+

Vulnerabilities patched by vendors

25x+

Bug bounty rewards received

4

Real-world cases investigated & solved

25

Security findings (14 crit, 9 high, 2 low)

1.3k

Followers on LinkedIn network

Core Skills

Expertise across offensive security domains — everything else lives in its own section up in the nav bar.

Exploit Development

Memory corruption, ROP chains, format strings and Linux kernel exploitation from initial crash triage to working proof-of-concept exploits.

Reverse Engineering

Static and dynamic binary analysis with GDB, Ghidra, and IDA Pro to recover proprietary logic, bypass checks, and uncover subtle vulnerability classes.

Bug Bounty Hunter

Discovering and responsibly disclosing high-impact vulnerabilities across enterprise web applications, authentication flows, and APIs.

Penetration Tester

Full-scope offensive security assessments across web, network, and Active Directory environments with clear, actionable remediation reporting.

Web & API Security

Deep application attack coverage, modern API exploitation, OAuth/SAML misconfigurations, and secure architecture reviews.

Network & Cloud Security

Internal network penetration testing, AWS/Azure cloud security posture assessments, lateral movement, and infrastructure hardening.

Education

(B.Tech) Bachelor of Technology / Cybersecurity

Pursuing undergraduate studies in engineering, with an interest in computer systems, software development and cybersecurity.

Explore

Pick a category from the glass bar above, or jump straight in from here.

Experience

Consulting roles, enterprise security assessments and research.

Achievements

HackerOne rankings, vulnerability discoveries and milestones.

CVEs & Disclosures

Vendor-patched findings and published security advisories.

Projects

Open-source offensive tooling, exploit scripts and security research.

Writeups

Technical exploit writeups, walkthroughs and research archive.

Certifications

Hands-on, exam-based credentials with verifiable proofs.

Profiles

Research platforms, CTF profiles and social links.

Let's Collaborate

Interested in collaborating on security research, exploit development, bug bounty programs or penetration testing engagements? Reach out and let's talk.

priyanshusingh.contact@proton.me

Lucknow, Uttar Pradesh · India