Ehtesham Ul Haq Offensive Security · SaaS and API

Hi, I'm Ehtesham. I break modern applications before attackers do.

Founder, The Hidden Finds · Application Security Researcher

I find real, exploitable vulnerabilities in SaaS products, APIs and AI driven applications. Manual testing, business logic first, impact proven.

About
How I work, and how I got here

I started reporting bugs on public programs in 2018, while I was still learning how real systems break rather than how they are drawn on a diagram. By 2021 it had become the thing I did most seriously, and it is where The Hidden Finds came from. I founded it to do this work under contract, with the depth a good bounty hunter brings and the structure a business actually needs.

Along the way I realized the vulnerabilities that matter are rarely about finding a bug from a checklist. They are about understanding how a system is supposed to work, and then seeing where that logic quietly breaks under someone who is not playing by the rules. That is why almost everything I do is manual. I use tooling to map a codebase or an attack surface, never to decide what is interesting. That judgment is the work, and it is the part a scanner cannot do.

My focus is SaaS applications and their APIs: authentication and authorization, multi tenant isolation, business logic, GraphQL, and the AI driven features that are now shipping faster than they are being secured. Most of my public writeups sit in exactly these areas, from cross tenant data exposure to chained API flaws that each looked harmless on their own.

Every engagement starts with scope agreed in writing. For code review I take read only access or an archive at a fixed commit. Each finding is reported with clear reproduction steps and the real impact spelled out, not a severity label with nothing behind it, and I stay reachable while your team fixes it. If you want the detail, the penetration testing, source code review and API security testing pages explain how each one runs.

Focus areas
What I test, and test well
01
Broken access control
IDOR and BOLA, object ownership, horizontal and vertical privilege escalation.
02
Multi tenant isolation
Cross tenant data exposure in SaaS products with shared infrastructure.
03
Authentication and sessions
Token handling, JWT flaws, OAuth, account lifecycle, recovery and invitation flows.
04
Business logic
The unintended flows a scanner never sees, chained into real impact.
05
API and GraphQL security
REST and GraphQL surfaces, over exposed fields, authorization gaps.
06
AI and LLM application security
Abuse paths in AI driven features and the data they can reach.
07
Source code review
Manual review in Python, JavaScript, TypeScript, PHP, Java and C#.
08
Sensitive information exposure
Data leaking through APIs, logs, errors and misconfigured integrations.
Recognition
Where my reports land
Resolved reports ✓ publicly disclosed
  • Financial Times · CORS, arbitrary origin trusted
  • LifeSite · brute force, full account takeover
  • LifeSite · session not invalidated on password change
  • Time and Date · CSRF bypass on email and name
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Bugcrowd ✓ ID verified
90.32%Submission accuracy across 56 submissions
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Certifications
Credentials
2026

eJPT, Junior Penetration Tester

More

Additional certifications

All verified badges on Credly
Experience
Work and profiles
2021 to now

Founder and Application Security Researcher

The Hidden Finds
Manual security assessments of SaaS applications, APIs and AI driven products, on a contractual basis.
2024 to 2025

Web Application Penetration Tester

Blendz Marketing
Application security testing of client web properties.
2018 to now

Security Researcher

HackerOne · Bugcrowd
Active responsible disclosure and bug bounty across both platforms.
Education · Studied Computer Science, Bahria University

Let's work together

For a security review, a disclosure, or to talk about an application you want tested properly.