Security researcher
& full-stack builder.
I take software apart and put it back together. Bug bounty research on HackerOne, Bugcrowd, and Intigriti, plus full-stack systems for real businesses. CS graduate of CUNY Lehman, May 2026.
❯ whoami
a builder who reads patch diffs for fun.
❯ cat now.txt
shipping bug bounty research on the GenAI attack surface. drafting an email-injection chain on Frappe. just graduated CUNY Lehman.
- 7 findings reported
- 15+ projects shipped
- 4 certifications
- 4y writing code
Available for work · open to security and full-stack roles.
Selected work
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Fruit Ninja, by hand
A full Fruit Ninja clone played with real fingers over webcam. MediaPipe tracks fingertips for slicing; face tracking creates fish-tank VR parallax through off-axis 3D projection. About five thousand lines of vanilla JavaScript.
JavaScript · Three.js · MediaPipe · Canvas2D · Computer vision
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Flash MMO protocol
Took apart a multiplayer Flash game's network stack: SmartFoxServer protocol via Wireshark, SWF in JPEXS, native DLLs in Ghidra. Found a client-side anti-cheat bypass: MD5 with a hardcoded salt.
Wireshark · Ghidra · JPEXS · Cheat Engine
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Point-cloud hand destruction
A 3D point cloud in TouchDesigner that you destroy with your hands. MediaPipe tracks the wrist; particles explode outward with noise displacement; a color wave sweeps through. Move your hand back and the form reassembles.
TouchDesigner · MediaPipe · GLSL · Real-time VFX
More on GitHub.
Findings
Program names are not listed because most engagements are under non-disclosure; available on request.
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Critical · CVSS 9.1 · duplicated · Intigriti Monitoring & observability
Parser allowlist bypass in the SQL expression engine
The fix for CVE-2026-27876 only guarded one of five AST fields skipped by vitess
walkSubtree(Into);load_file()inside anORDER BYclause reaches arbitrary files on disk. Same primitive class as CVE-2024-9264. -
High · submitted, awaiting triage · HackerOne Crypto platform
Email injection in a Frappe-based contact form
The
senderparameter is used as the email recipient rather than the sender address, enabling attacker-controlled outbound mail from the platform's legitimate domain with full SPF/DKIM/DMARC alignment and no rate limit. Working end-to-end PoC with chained phishing payload. -
High · CVSS 8.6 · submitted May 14 2026, awaiting triage · Intigriti Cloud infrastructure
SSRF in a GenAI Knowledge Base web crawler
HTTP 302 redirect bypass of hostname deny-list and IP resolution check reaches 169.254.169.254 cloud metadata and internal infrastructure. A redirect trampoline grants access to cloud user-data and program-provided SSRF endpoints.
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High · CVSS 7.5 · duplicated · HackerOne Crypto platform
Admin user enumeration via Cognito ForgotPassword
Unauthenticated GraphQL query leaks the admin
client_id; Cognito's ForgotPassword endpoint returns distinct responses for valid versus invalid usernames (CodeDeliveryDetailsvsUserNotFoundException), enabling admin email enumeration with a first-letter leak in the destination field. Patched shortly after testing. -
P5 / Informational by program triage · Bugcrowd Fitness tracking app
OAuth token exposure on the public authorize page
Access tokens embedded in
window.__STATE__on the public OAuth authorize page enabled authentication bypass with confirmed account modification (PUTto a user resource returned200 OK,first_namemodified) and mass user enumeration across IDs 1 through 231M+ via email, name, and query searches without rate limiting. Program ruled the modified account was a test user. -
CWE-798 / CWE-522 · duplicated · Bugcrowd Domain registry
Hardcoded production API credentials in a public JS config
Production API credentials hardcoded in a publicly-accessible JavaScript config on the provider's domain-suggestion product, granting unauthenticated access to all seven backend API endpoints. Triaged as duplicate of an earlier April 2025 report with restricted key scope.
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Medium · triaged valid · HackerOne
Unauthenticated mail relay
Email spoofing with valid DKIM/SPF signatures. Provided CVSS analysis and remediation guidance.
Experience
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Equinox · Manager on Duty
Scarsdale, NY. Promoted from Front Desk Associate at Mamaroneck. Flagship rotations at Hudson Yards and Printing House.
- Contribute to strategy meetings with the General Manager, Regional Training Manager, and Facility Manager on member retention, personal-training conversion, facility quality, and staff performance.
- Rebuilt front desk schedule and shift structure; closed a $1,500 labor budget overrun to zero in three months.
- Run point on in-house tech for the club: BitLocker recovery, Windows blue screens, POS configuration, audio system faults, member-facing hardware. Diagnose first; escalate to the vendor only when a part has genuinely failed.
- Daily walkthroughs surface cleanliness and equipment risk. Caught a member accessing the club on someone else's account for nearly a month from a photo-ID mismatch the desk had missed; escalated to GM.
- Coach the front desk team on luxury-club engagement standards. Trained 10+ teammates; cross-trained in Pro Shop. CPR/AED certified.
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Yonkers Car Wash · Web & operations
Yonkers, NY. Built and run a full membership/billing site, remote infrastructure, and the operations behind it.
- Full-stack membership and billing site; remote ICS monitoring via RDP/VNC over Tailscale.
- Managed technical operations and marketing. Increased renewals 35% through automated email.
- Supervised and trained a 15-person team; monitored operations remotely.
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Central Deli & Convenience · Co-owner
Mamaroneck, NY.
- Hired and trained a team of seven; established service standards.
- Owned finances: expense tracking, overhead, profit, forecasting in Excel.
- Food safety, inventory, and quality control.
- Designed the full in-store menu and the digital TV menus from scratch.
Education & credentials
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CUNY Lehman College, B.S. Computer Science, GPA 3.4, graduated May 28, 2026.
Data structures, full-stack web, AI, machine learning, robotics, discrete math, vector calculus, probability. - SUNY Westchester CC, Computer Programming (Programming I & II), two years.
- Self-directed cybersecurity, 2022 to present. CTFs, HackTheBox, bug bounty programs, PortSwigger Academy.
- ✓ Anthropic Cyber Verification Program
- ✓ CompTIA Security+
- ✓ Google Cybersecurity Professional Certificate
- ✓ CodePath Intermediate Cybersecurity & Python
About
Based in New York. English at work, Arabic at home. I started writing code in high school, and most of it has come from being annoyed at someone else's software.
Burp Suite was a GUI; I wrote an API on top of it. Recon was getting repetitive, so I shipped twelve tools into MCP Kali Server and let an AI run them for me. The maintainer reviewed it and merged. Red Alert 2's voxel format had been undocumented forever; I documented it on a Saturday and shipped a Blender exporter on Sunday. None of this was assigned. I just don't like waiting.
Finished CS at CUNY Lehman in May 2026. I read disassembly for fun and write CRUD apps for money. People keep asking me which side I want to be on. So far the answer is yes.
Daily drivers: Python · JavaScript · Bash · Java · React · Node.js · Express · PostgreSQL. Security: Burp Suite · Ghidra · Cheat Engine · Wireshark · Nmap · SQLMap · Hydra · John the Ripper · Metasploit · SNORT · Splunk · Auditd · subfinder · httpx · nuclei · ffuf · gobuster · arjun · subzy · waybackurls · Shodan. Infrastructure: Proxmox · Docker · VMware · Hyper-V · Tailscale · RDP/VNC · Active Directory · TCP/IP · DNS · Group Policy.
Reach
- email hamzehemreish37@gmail.com
- github github.com/sh4faq
- linkedin linkedin.com/in/hamzeh-emreish
- resume Hamzeh_Emreish_Resume.pdf
- cv Hamzeh_Emreish_CV.pdf