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Usman Saeed

@usmansaeed3

Cybersecurity founder at DefZero assessing AI systems and building the SecRaptor security testing platform.

Netherlands
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What I'm looking for

I’m interested in helping teams build, deploy, and secure AI-enabled systems, and in helping organizations build offensive security teams.

At DefZero, I advise clients on security strategy and deliver security advisory, incident response, Red Team, and application security services. I assess AI and LLM architectures, including model integrations, agentic workflows, and data flows, to help teams understand risks before deployment.

I’m also the founder and lead engineer of SecRaptor, a multi-tenant platform for automated web and API security testing, built in Python. My work includes offensive security research: in 2023, we began researching multi-turn jailbreaks and coined the Dissociative Trust Exploitation methodology.

Experience

Work history, roles, and key accomplishments

DefZero logoDE
Current

Founder | Principal Security Advisor

DefZero

Apr 2024 - Present (2 years 6 months)

▸ Lead delivery of security advisory, incident response, Red Team, and application security services; advise CEOs and CTOs on security strategy, roadmaps, and risk posture, managing engagements end-to-end from scoping to executive reporting.
▸ Perform AI/LLM security architecture reviews and assessments — model integrations, agentic workflows, and data flows against emerging threat frameworks (OWA

DefZero logoDE

Freelance Cyber Security Consultant at Pro CISO B.V.

DefZero

Apr 2024 - Sep 2024 (5 months)

Worked as Freelance Cyber Security Consultant at Pro CISO B.V. at DefZero.

FL

Founder | CEO

File Armour Ltd

Jan 2023 - Mar 2024 (1 year 2 months)

If you want to share your confidential, secret or classified files, I can help! Our solution is designed to do exactly that!

Centric logoCE

Teamleader - Offensive Security (Red Team)

Jul 2022 - Mar 2024 (1 year 8 months)

Part of the management team of the Centric Security organization. Responsible for managing and growing the offensive security team (Red Team) within Centric.

Centric logoCE

Enterprise IT Security Advisor

Nov 2021 - Jul 2022 (8 months)

Advising the CISO on technical security issues. Furthermore helping the operational teams with security issues and threats!

Centric logoCE

Business Development Manager & Security Consultancy Lead, Cyber Defense Services

Apr 2020 - Nov 2021 (1 year 7 months)

I am part of the management team for CDS business unit. On the one hand I am pursuing my passion in cyber security by mentoring the consultants and actively participating in engagements. On the other hand, along with the management team, helping build a consultancy business by setting up road-maps, strategy as well as building all the operational components like SOPs, Templates, etc. Furthermore,

Centric logoCE

Program manager & Technical security lead, Cyber Defense Services (CDS)

Jun 2019 - Apr 2020 (10 months)

Program Manager for the CDS BU. Building and shaping the Cyber Defense Services entity in Centric. Moreover, as a Technical Security Lead, helping the technical security teams with assessments, mentoring and training.

F-Secure Corporation logoFC

Senior Security Consultant

F-Secure Corporation

Jun 2016 - Jun 2019 (3 years)

Bridging the gap between organization's top management's percieved vision of their organization's security posture and the real ground situation of their information security infrastructure, by performing:

- Red Team penetration tests
- Conventional penetration tests (Web Application, Mobile app, Digital Infrastructure)
- Trainings
- Awareness drills

DD

Senior Consultant, Enterprise Risk Services

Deloitte Danmark

Aug 2015 - Jun 2016 (10 months)

Current responsibilities include:

• Creating a Red team Penetration test flow
• Leading the Red Team Penetration tests
• Performing conventional Penetration tests (Web Application, Mobile app, Digital infrastructure)
• Proposal writing

Innovative Solutions SA logoIS

Information Security Consultant (Team Lead, Penetration Testing Service Line)

Innovative Solutions SA

Jan 2012 - Jan 2015 (3 years)

• Pre-sales Presentations
• Penetration Testing including Infrastructure Penetration Test , Web Application Penetration Test , Network Penetration Test.
• Corporate Trainings
• Incident Response
• Security Configuration Reviews
• Vulnerability Assessment for various clients

OWASP logoOW

OWASP Riyadh Chapter Leader

OWASP

Sep 2012 - Dec 2014 (2 years 3 months)




Volunteer Work ,Organizing Events and Talks.

XG

Founder

Xc0re Security Research Group

Jan 2008 - Feb 2014 (6 years 1 month)

InfoSec / Ethical Hacking Training
• Vulnerability Research
• Exploit Creation
• Maintained Social network marketing services such as Facebook [ https://www.facebook.com/pages/Xc0re-
Security-Reseach-Group/168397916536539?ref=ts ] , Twitter
http://twitter.com/#!/xc0resecurityrg .
• Maintaining Xc0re Website http://xc0re.net .
• Maintaining Blog http://xc0re.wordpress.com .

Interactive Group Of Companies logoIC

Penetration Tester

Interactive Group Of Companies

Feb 2011 - Nov 2011 (9 months)

Corporate Communication
Penetration Testing
- Red Team Penetration Test
- Infrastructure Penetration Test
- Web App Penetration Test
- Voip Penetration Test
Vulnerability Assessment
Developing Security Training Programs
Developing Security Awareness Programs

TC

Penetration Testing Engineer

Tasaheel Information and Electronic co.

Nov 2010 - Jul 2011 (8 months)

Worked as a Freelance Contractor on Web Application Penetration Testing

Skill Development Council, Islamabad logoSI

Information Security Trainer

Skill Development Council, Islamabad

Apr 2010 - Apr 2011 (1 year)

- Delivered a four day training course on "Ethical Hacking", at Skill Development Council, Islamabad, April, 2011.

- Delivered a four day training course on "Ethical Hacking", at Skill Development Council, Islamabad, April, 2010

CT

Information Security Trainer

COMSATS Institute of Information Technology

May 2009 - Jun 2010 (1 year 1 month)

- Delivered a two day training course "Ethical Hacking and Counter measures”, at Comsats Institute of `Information Technology, Islamabad, 28-29th June, 2010

- Presented a Seminar at Comsats Institute Of Information Technology, Pakistan, ”Web Application Security”, Monday 11th May , 2009.

IC

Web Application Security Trainer

Innovative Consultants

Apr 2009 - Apr 2009 (0 months)

Delivered a One Day Training Session/Workshop, organized by Innovative Consultants, “Web Application & Security”

InterActive Group of Companies logoIC

Team Lead Cyber Security

InterActive Group of Companies

Sep 2007 - May 2008 (8 months)

Malware Analysis
Antivirus Benchmarking
Penetration Testing
Exploit Research

InterActive Group of Companies logoIC

Network Security Engineer

InterActive Group of Companies

Jun 2006 - Aug 2007 (1 year 2 months)

Handling Juniper Firewalls
Managing Spam Engine Technologies
Network Security Design
Sun Ray Thin Client Implementation

Education

Degrees, certifications, and relevant coursework

HE

Harvardx on edX

Exercising Leadership: Foundational Principles

Jan 2021

EL

eLearnSecurity

eWPT v1

Apr 2020

IS

(ISC)²

CISSP

Jun 2017

CS

Core Security

Core Impact Certified Professional

Feb 2011 · Expired Feb 2013

CT

COMSATS Institute of Information and Technology

Masters in Computer Science, Network & Information Security

2008 - 2010

EC

EC-Council

Certified Ethical Hacker (C|EH) v6

Aug 2008 · Expired Dec 2013

CT

COMSATS Institute of Information and Technology

Bachelors in Computer Science, Computer Science

2003 - 2007

Tech stack

Software and tools used professionally

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