FOYSAL×MAHMUD
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⚠ UNAUTHORIZED REPRODUCTION STRICTLY PROHIBITED ☠ ETHICAL HACKER & DEVELOPER PENETRATION TESTER OSINT SPECIALIST DHAKA · BANGLADESH NDC IT TEAM MEMBER ⚠ UNAUTHORIZED REPRODUCTION STRICTLY PROHIBITED ☠ ETHICAL HACKER & DEVELOPER PENETRATION TESTER OSINT SPECIALIST DHAKA · BANGLADESH NDC IT TEAM MEMBER
Operational — Available for engagement · BD

FOYSAL MAHMUD

"I break into systems — legally — so criminals can't."
▸ETHICAL HACKER

Offensive security with a defensive conscience. I'm hired to think like the adversary — probing web applications, networks and human-facing systems for the weaknesses others miss. Then I help you close them. Properly, permanently, and with evidence.

0+
Yrs in the Field
0+
Clients Secured
0+
Vulnerabilities Found
0+
Projects Shipped
Foysal Mahmud — Ethical Hacker
Foysal MahmudCyber Security Specialist
LAT 23.8103° N
LON 90.4125° E
LOCAL --:--:--
SESSION 00:00:00
THREATCON ACTIVE
ETHICAL HACKER · SECURITY RESEARCHER
yes, that's really me ↴
foysal@kali: ~/engagement — AUTO·PLAY
LIVE DEMO
● AUTOMATED — SIT BACK & WATCH recon → audit → report · loops automatically
Scroll
01CONTINUE ▸ FILE 00 — DEPLOYMENTS: ONE DROP & MEAL LEDGER
File 00 // Deployments — 2 live in production
BUILT TO SHIP
not to demo
Two products I designed, built and pushed to production — both handling other people's real data today. Each one has its own case file with the full story, the architecture and a live demo. The short version is right here.
ONE DROP LIVE · LATEST SHIPMENT
№ 121

A volunteer blood-donor network for Bangladesh. A family posts an emergency, the board counts down live, and matching donors surface nearest-first — by blood group, district and distance. Built for the Notre Dame College Batch 27 initiative: student-run, free forever, no sign-up needed to search.

IN PRODUCTION PWA · OFFLINE FIREBASE + FIRESTORE ZERO FRAMEWORK 70 E2E CHECKS
8blood groups matched
25/hrcontact reveal cap
0numbers in the markup
MEAL LEDGER LIVE · V1.3.0
№ 120

A hostel meal-billing engine that cannot lie. Money lives as integer paisa, meals as exact half-units, every hostel rule is encoded in a locked, tested rulebook — and each resident's ledger is isolated server-side by Firestore rules, not by a UI promise.

IN PRODUCTION INTEGER MONEY RULES-ENFORCED ISOLATION ZERO DEPENDENCIES 20 TESTS
৳ EXACTno float drift
20automated tests
~250KBentire PWA
both of them are real products with real users — go ahead, try to break them ↗
02CONTINUE ▸ FILE 01 — THE DOSSIER
File 01 // The Dossier
THE OPERATOR
BEHIND the terminal

Every security career starts with a question. Mine was simple — how do things break? Hi, I'm Foysal Mahmud, a Cyber Security Specialist and Ethical Hacker with 3+ years of hands-on field work. I study at Notre Dame College, Dhaka, and I've chosen to do the unusual: pursue professional offensive security seriously, in parallel with my studies — not as a hobby, but as a craft.

My work spans penetration testing, ethical hacking, OSINT investigations and full-cycle security consulting — for individuals, startups and organizations. I've built and broken enough systems to know exactly where teams usually look away: misconfigurations, trust assumptions, forgotten endpoints and the human layer. Those blind spots are where I operate.

I run every engagement the same way: reconnaissance → exploitation → evidence → remediation. No fear-mongering reports, no jargon walls. You get findings in plain language, proof for every claim, and a prioritized path to fix them. Security is a discipline, not a product — I'm here to be your long-term partner in it.

Notre Dame College Dhaka, BD 3+ Yrs Experience NDC IT Team Open to Work Kali Linux Burp Suite OSINT
// 2021 — GENESIS
First contact with the dark side of the web
Started with a question and a Kali Linux VM. Learned networking, Linux internals and scripting — breaking my own lab machines before touching anyone else's.
// 2022–2023 — THE TURN
From curiosity to methodology
Moved from random CTFs to structured methodology — OWASP, recon workflows, report writing. First paid engagements: web audits for local businesses.
// 2025 — THE INSTITUTION
NDC IT Team & real infrastructure
Arrived at Notre Dame College in 2025 — and went straight into the NDC IT Team, building and maintaining official platforms for campus events, including the NDSC Science Festival central hub.
// 2025 — THE STAGE
Shikho Live · AIUB Robotics · public recognition
Invited as a Special Guest Merit Student from Notre Dame College on Shikho's 'স্মার্ট স্টার্ট: HSC + AI' live launch — and represented NDSC at the AIUB Robotics Workshop with OSA & AIUB Robotic Crew.
// NOW — THE MISSION
180+ vulnerabilities later
Running engagements for clients worldwide from Dhaka — and still treating every target like it's the one that matters.
SUBJECT ID // FM-1627 · DHAKA
Foysal Mahmud — field photo
somewhere in dhaka — probably debugging something
"The best engagement ends with the client sleeping better — not scared straight. Fear is easy. Confidence takes craft."
— F. MAHMUD · OPERATING PRINCIPLE

P.S. — yes, I really do all of this between classes. Sleep is a scheduled vulnerability.

0
Years in the Field
0
Clients Secured
0
Projects Shipped
0
Vulnerabilities Found
03CONTINUE ▸ FILE 02 — GLOBAL ATTACK SURFACE
File 02 // Live Telemetry
GLOBAL ATTACK
SURFACE monitor

A simulated real-time view of the internet's background noise — port scans, brute-force attempts and intrusion probes hitting monitored infrastructure worldwide. This is the visibility every engagement of mine starts with.

drag it — it's a real 3D globe, not a video ↻
// Target Network — Global Nodes  LIVE
0Packets/s
0Alerts
Risk HIGH
LAT 23.8103°N · LON 90.4125°E · HOME NODE: DHAKA
ORTHOGRAPHIC 3D · WEBGL · REAL-TIME SIM
Drag any direction · double-tap to reset
// 3D RENDERER UNAVAILABLE — LIVE TELEMETRY FEED ONLY
Monitored Node
Active Threat
 Live Intrusion Attempt
// SIMULATION · EDUCATIONAL
0
High-Risk Vulnerabilities · Reported
0
Ports Scanned · Open
0
Critical Exploits · Proven
0
Networks · Assessed
04CONTINUE ▸ FILE 03 — THE ARSENAL
File 03 // Skills & Arsenal
WHAT I KNOW
& HOW I work
CORE COMPETENCIES — SELF-ASSESSED, FIELD-TESTED
Kali Linux / CLI90%
Python Scripting85%
OSINT & Recon82%
Network Pentesting80%
Web App Security78%
JavaScript / HTML / CSS72%
Tools don't make a hacker — methodology does. The arsenal below just makes the methodology faster.
Burp Suite
Metasploit
Nmap
Wireshark
SQLMap
Nikto
Git / GitHub
Linux Admin
Social Engineering
OSINT Stack
yes, my lab wifi is named "FBI Surveillance Van #4"
05CONTINUE ▸ FILE 04 — CAPABILITIES
File 04 // Capabilities
WHAT I BRING
TO your table

Five disciplines, one mindset: assume nothing, verify everything, and leave the system harder than you found it.

// Service 01
ETHICAL
HACKING

Authorized, simulated attacks against your systems — executed exactly like a real adversary would. I probe your infrastructure for the weaknesses an attacker would find first, then hand you a risk-rated report with proof-of-concept evidence and a remediation roadmap — before someone with worse intentions finds the same doors.

Start an Engagement
01
most requested ★ Ethical Hacking
// Service 02
PENETRATION
TESTING

Deep-dive security assessments where automation meets craft. Scanners find the obvious; I hunt the logic flaws, chained misconfigurations and business-logic abuses that tools can't reason about. Web apps, APIs, networks and mobile — every finding delivered with PoC evidence and business-impact analysis.

Start an Engagement
02
Penetration Testing
// Service 03
SECURITY
CONSULTING

Strategy before tooling. Threat modeling, risk assessment, incident-response planning and security culture — tailored to your risk landscape and budget, not a generic checklist. Whether you're a startup shipping your first product or an organization hardening what already exists, I help build a posture that lasts.

Start an Engagement
03
Security Consulting
// Service 04
SECURE
DEVELOPMENT

I don't just find vulnerabilities — I know how they get written. Landing pages, platforms and web applications built secure by design: validated inputs, hardened headers, sane auth, clean architecture. The rare developer who has read your codebase from the attacker's side first.

Start an Engagement
04
Secure Web Development
// Service 05
OSINT &
RECON

What does the internet already know about you? Open-source intelligence gathering and digital-footprint analysis that shows exactly what an attacker learns before they ever knock on your firewall — exposed records, leaked credentials, metadata trails — and how to shrink that footprint.

Start an Engagement
05
OSINT & Recon
06CONTINUE ▸ FILE 05 — ENGAGEMENT PROTOCOL
File 05 // Engagement Protocol
HOW AN ENGAGEMENT
actually runs

No mystery, no black box. Every engagement follows the same four-phase protocol — you know what's happening at every step, and you get full documentation when it's done.

01
Recon & Scoping
We define targets, rules of engagement and success criteria. A signed scope-of-work protects both sides. Then passive reconnaissance: mapping your attack surface the way an adversary would — before touching anything.
DELIVERABLE: SCOPE DOCUMENT
02
Exploitation & Proof
Controlled attacks against the agreed scope — automated tooling for coverage, manual work for depth. Every vulnerability is verified and exploited only far enough to prove real impact. No damage, no drama, full evidence.
DELIVERABLE: PoC EVIDENCE LOG
03
Reporting & Debrief
A professional report in plain language: findings ranked by real business risk, reproduction steps, screenshots, and a live debrief call where I walk your team through every issue — and answer everything.
DELIVERABLE: FULL PDF REPORT
04
Remediation & Harden
A prioritized fix plan your developers can actually execute. I stay available through implementation, re-test the fixes, and verify the attack surface is genuinely smaller — not just declared fixed.
DELIVERABLE: RE-TEST & SIGN-OFF
07CONTINUE ▸ FILE 06 — FIELD RECORDS
File 06 // Field Records
SELECTED OPERATIONS
from the field

A sample of real engagements — anonymized and redacted to protect client confidentiality. Hover the redactions to decrypt. Full references available on request.

↓ real cases — names hidden for obvious reasons
REC-0117 DECLASSIFIED
OP · NIGHTFALL
CLIENT: E-COMMERCE PLATFORM, DHAKA
WEB APPPRE-LAUNCH72H WINDOW
  • SQL injection — customer database exposedCRITICAL
  • Broken access control on admin panelHIGH
  • Payment callback forgery possibleHIGH
  • Verbose error leakage on 3 endpointsMEDIUM
OUTCOME: PATCHED BEFORE LAUNCH 2024
REC-0203 DECLASSIFIED
OP · GLASSHOUSE
CLIENT: FINTECH STARTUP, SINGAPORE
APIOSINTREMOTE
  • IDOR — transaction records of any userCRITICAL
  • JWT signature not validatedCRITICAL
  • Employee credentials found in leaksHIGH
  • Rate limiting absent on OTP endpointMEDIUM
OUTCOME: SECURITY OVERHAUL DELIVERED 2025
REC-0289 DECLASSIFIED
OP · PAPER TRAIL
CLIENT: EDUCATIONAL INSTITUTION, BD
NETWORKINTERNALON-SITE
  • Default creds on 4 network devicesCRITICAL
  • Student records system exposed to LANHIGH
  • Rogue Wi-Fi hotspot impersonating staff netHIGH
  • No logging on perimeter firewallMEDIUM
OUTCOME: HARDENED + STAFF TRAINED 2025
OPERATION NAMES ARE RANDOMLY ASSIGNED · CLIENT IDENTITIES PROTECTED UNDER NDA · DETAILS PUBLISHED WITH PERMISSION
08CONTINUE ▸ FILE 07 — PUBLIC RECORD
File 07 // Public Record
KEYNOTE & achievements

Security is the craft — but the field is wider than the terminal. From an ethical-hacking interview with চলতি and guest-speaking on national ed-tech live streams, to representing Notre Dame College in robotics outreach at AIUB and building the digital backbone for institutional science events.

// SHIKHO SPECIAL GUEST Foysal Mahmud at Shikho HSC + AI Live
'স্মার্ট স্টার্ট: HSC + AI' LIVE LAUNCH

Special Guest on Shikho Live, with Shahedin

Invited as a Special Guest Merit Student from Notre Dame College for Shikho's flagship live launch — speaking on the SSC→HSC transition, how AI belongs in a smart study system, and practical roadmaps for incoming HSC batches.

// AIUB ROBOTICS WORKSHOP Workshop on Robotics for NDSC at AIUB
22 NOV 2025 · AIUB CAMPUS

Robotics Workshop for NDSC, hosted at AIUB

With OSA & the AIUB Robotic Crew (ARC), bringing 66 Notre Dame College Science Club students into the lab: 3D CAD modeling, live drone demos, a Robo Soccer championship — and trophies and medals that traveled back to NDC with the team.

// NDC LEADERSHIP Notre Dame College IT Team & NDSC
NOTRE DAME COLLEGE, DHAKA

NDC IT Team & NDSC — Builder Duty

Active developer and technician for the Notre Dame College IT Team and NDSC — designing and running the official platforms behind the Annual Science Festival and campus tech initiatives. The invisible systems behind visible events.

09CONTINUE ▸ FILE 09 — INTERCEPTED SIGNALS
File 09 // Intercepts
SIGNALS FROM clients
Verified
"
★★★★★

Foysal did an outstanding job on our web application security audit. He found critical vulnerabilities our internal team had completely missed — including an SQL injection that could have exposed our entire user database. The report alone was worth the engagement.

Rafiqul Islam
Verified
"
★★★★★

Professional, fast, and extremely knowledgeable. Foysal stress-tested our e-commerce platform before launch and found 3 critical and 7 medium-risk issues. The penetration test report was detailed, clear, and very actionable — our devs fixed everything in one sprint.

Sakib Hossain
Verified
"
★★★★★

Working with Foysal was great from start to finish. He explained every finding in plain language, provided PoC screenshots, and gave a clear remediation roadmap. Will definitely work again.

Nusrat Jahan
Verified
"
★★★★★

Hired Foysal for an OSINT investigation and network security review. He delivered a well-organized report within the timeline. Communication was excellent and the quality of work exceeded expectations.

Arif Chowdhury
10CONTINUE ▸ FILE 10 — CLEARANCE QUESTIONS
File 10 // FAQ
CLEARANCE questions
What services do you offer?
Ethical hacking, web application penetration testing, network security assessments, OSINT investigations, vulnerability scanning, and ongoing cybersecurity consulting. One-time audit or long-term partnership — both start with a conversation.
How do I get started?
Reach out via WhatsApp, Facebook, or email. I respond within 24 hours to discuss requirements, define scope, and provide a quote. Every engagement starts with a free initial consultation — no strings attached.
Is ethical hacking actually legal?
100% — when performed with explicit written authorization. I require a signed scope-of-work agreement before touching any system, and all work is fully compliant with applicable laws. No authorization, no engagement. That line never blurs.
How long does an engagement take?
A focused web application audit typically takes 3–5 days. A full network penetration test runs 1–2 weeks. OSINT investigations: 2–4 days. You get a precise timeline before we begin — no surprises, no scope creep.
What does the final report include?
A professional PDF document: every vulnerability with risk rating (Critical / High / Medium / Low), proof-of-concept evidence, business impact analysis, and step-by-step remediation guidance — plus a live debrief call where I walk your team through it.
What is your pricing?
Pricing scales with scope and complexity — with competitive rates for individuals, startups, and enterprises. Contact me for a free quote: transparent pricing, no hidden charges, no surprises on the invoice.
11CONTINUE ▸ FINAL FILE — OPEN A CHANNEL
Final File // Contact
OPEN A SECURE
channel
Ready when
you are.
my AI assistant replies fast — usually faster than this page loads

Whether it's a full penetration test, a second opinion on your security posture, or a question you'd rather ask privately — reach out. First consultation is free, and everything you share stays confidential.

Dhaka, Bangladesh · Operating Worldwide (Remote)
Response < 24h NDA Friendly Confidential by Default
Foysal Mahmud — contact
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Projects — One Drop & Meal LedgerP
Case File № 121 — One DropO
Case File № 120 — Meal LedgerM
Open Dossier — About1
Live Threat Map2
Skills & Arsenal3
Capabilities — Services4
Field Records — Case Files5
Engagement Protocol6
Visual ArchiveG
Contact — Hire MeH
Open Secret VaultS
Open AI AssistantA
Automated Terminal — Watch the DemoT
চলতি Interview — Full Case StudyC
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