Sebastien Deleersnyder
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Sebastien Deleersnyder Email & Phone Number

Co-founder and CTO at Toreon
Location: Ghent Metropolitan Area, Belgium, Belgium 18 work roles 2 schools
3 work emails found @toreon.com 1 phone found area 247 LinkedIn matched
✓ Verified Jun 2026 4 data sources Profile completeness 100%

Contact Signals · 3 work emails · 1 phone

Work email s****@toreon.com
Direct phone (247) ***-****
LinkedIn Profile matched
3 free lookups remaining · No credit card
Current company
Role
Co-founder and CTO
Location
Ghent Metropolitan Area, Belgium, Belgium
Company size

Who is Sebastien Deleersnyder? Overview

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Quick answer

Sebastien Deleersnyder is listed as Co-founder and CTO at Toreon, a company with 66 employees, based in Ghent Metropolitan Area, Belgium, Belgium. AeroLeads shows a work email signal at toreon.com, phone signal with area code 247, and a matched LinkedIn profile for Sebastien Deleersnyder.

Sebastien Deleersnyder previously worked as Co-founder & CTO at Toreon and Co-founder & CEO at Toreon. Sebastien Deleersnyder holds Middle Management Programme from Vlerick Leuven Gent Management School.

Company email context

Email format at Toreon

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{first}.{last}@toreon.com
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AeroLeads found 3 current-domain work email signals for Sebastien Deleersnyder. Compare company email patterns before reaching out.

Profile bio

About Sebastien Deleersnyder

With Toreon we have one goal in mind: to make working together in the digital world much safer.Working with us means having a partner in digital security. Our people are driven by knowledge and focused on collaboration. Through coaching and training we don’t just increase your security level, but grow the internal expertise within your organisation.That’s how we achieve digital progress, together.I am co-founder, CTO of Toreon and a proponent of application security as a holistic endeavor. I started the Belgian OWASP chapter, was a member of the OWASP Foundation Board and performed several public presentations on Application Security. With a background in development and many years of experience in security, I have trained countless developers to create software more securely. I lead OWASP projects such as OWASP SAMM, thereby truly making the world a little bit safer. Now I adapt application security models to the evolving field of DevOps and also focus on bringing Threat Modeling to a wider audience.Delivered Threat Modeling training at Black Hat, OWASP, O'Reilly and several international customers. More on our Threat Modeling training: https://www.toreon.com/threatmodeling/

Listed skills include Security, Application Security, Web Application Security, Information Security Management, and 40 others.

Current workplace

Sebastien Deleersnyder's current company

Company context helps verify the profile and gives searchers a useful next step.

Toreon
Toreon
Co-founder and CTO
Ghent, BE
Website
Employees
66
AeroLeads page
18 roles · 21 years

Sebastien Deleersnyder work experience

A career timeline built from the work history available for this profile.

Co-Founder And Cto

Ghent, BE

Co-Founder & Cto

Current

Antwerpen, Antwerpen, BE

With Toreon we have one goal in mind: to make working together in the digital world much safer.Working with us means having a partner in digital security. Our people are driven by knowledge and focused on collaboration. Through coaching and training we don’t just increase your security level, but grow the internal expertise within your organisation.That’s.

Apr 2021 - Present

Co-Founder & Ceo

Antwerpen, Antwerpen, BE

As security project leader, application security specialist, trainer and trusted advisor for our customers, I have a track record of delivering information security projects. I specialise in Web & Mobile Application Security, combining both my broad software development and ICT security experience.I believe that our customers should be able to trust the.

2014 - Apr 2021

Coo & Trainer

Current

Antwerpen, Antwerpen, BE

Founded in 2012, DPI focuses on trainings on the crossroads of data protection, governance and security. We believe in a digital and data driven world, where industries must build their innovation pipelines with security and privacy in mind. All stakeholders involved, from board members to data protection officers, information security professionals and.

Apr 2021 - Present

Project Co-Leader

Current

Project co-leader of OWASP SAMM

Nov 2014 - Present

Owasp Belgium Volunteer

Current

OWASP Belgium Volunteer (2024 +)Founder and chapter leader of OWASP Belgium (2005-2023)Started and still running the OWASP Belgium chapter together with a great team of OWASP volunteers.We organize about 4 chapter meetings per year and one OWASP BeNeLux conference per year details: https://owasp.be/ and https://www.owaspbenelux.eu/

May 2005 - Present

Owasp Volunteer

Current
Owasp Foundation

I am active within OWASP since 2005 and have contributed year on year to OWASP chapters, conferences, projects and the OWASP mission of fighting the causes of software insecurity. I served on the OWASP Foundation board from 2007 to 2013.I co-organized the European AppSec Conferences in OWASP AppSec Europe 2008 - Belgium and OWASP AppSec Europe 2009.

2005 - Present ~21 yrs 5 mos

Web Application Security Specialist - Freelance

Current
Tall Solutions

Providing AppSec consulting services.Specialised in secure development lifecycle projects, setting up software security groups and closing audit findings regarding application security:-)

Jan 2010 - Present

Cybersecurity Personality Of The Year 2022 In Belgium

Brussels, Brussels Region, BE

I had the honour of being selected the Cyber Security Personality of 2022 by Belgian Cyber Security Coalition.If you want to go fast, go alone; if you want to go far, go together...I dedicate this price to my colleagues, friends, and the volunteers at Toreon, Data Protection Institute, OWASP BeNeLux Days, OWASP SAMM, OWASP® Foundation, BruCON, Cyber.

Oct 2022 - Nov 2023

Security Architect – E-Banking Security Specialist

Brussels, Brussels Region, BE

Information Security and Risk Management for Internet and Mobile Banking

Sep 2013 - Feb 2015

Co-Founder And Co-Organizer

Drieslinter, Flemish Region, BE

BruCON is an annual security and hacker(*) conference providing two days of an interesting atmosphere for open discussions of critical infosec issues, privacy, information technology and its cultural/technical implications on society. Organized in Brussels, BruCON offers a high quality line up of speakers, security challenges and interesting workshops. See.

Jan 2009 - Nov 2014

Web Security Project Manager

Ing Insurance Central And Rest Of Europe

Startup a Centre of Expertise Web Security for ING Insurance Central and rest of Europe.

Jul 2012 - Jul 2013

Managing Technical Consultant Ict Security

Zellik, BE

Started up the ICT Security bussines line for SAIT Zenitel BeNeLux-France. Performed several web application security engagements in finance and utility sector.

Jan 2010 - Aug 2012

Competence Domain Captain Application & Content Security

Brussels, BE

Application & Content Security coaching & technical leadership Develop the Application & Content Security business by defining new/amended solutions Develop the Application & Content Security business by creating awareness internally an externally Develop strategic vision of where Telindus should be in the Application & Content Security domain within 1-3-5.

Apr 2007 - Dec 2009

Principal Information Security Consultant

Ascure

I performedSecurity Architecture, Threat Modeling, Web Application and Web Services Security training and information security project management tasks in Banking, Healthcare and Government industries.

Jan 2003 - Mar 2007

Integration Architect And Various Security Roles

Blue Bell, Pennsylvania, US

Security Consultant, Security Officer and Operations manager for various customers, including European institutions.Integration Architect in Banking.

Oct 1998 - Dec 2002

Analyst-Programmer

BE

Analyst-Programmer in Healthcare and Steel Industry

Feb 1997 - Sep 1998

Real-Time Programmer, Web Site Developer And Sales Officer

Rtusi

Development of a Mil 1553 Std bus test equipment for the Space Station AlphaDevelopment of database-driven Intra- and Internet sites Pre-sales, sales and services of real-time Software and Hardware

Aug 1995 - Jan 1997
Team & coworkers

Colleagues at Toreon

Other employees you can reach at toreon.com. View company contacts for 66 employees →

2 education records

Sebastien Deleersnyder education

Middle Management Programme

Vlerick Leuven Gent Management School

Master, Computer Science – Applied Informatics

Ghent University
FAQ

Frequently asked questions about Sebastien Deleersnyder

Quick answers generated from the profile data available on this page.

What company does Sebastien Deleersnyder work for?

Sebastien Deleersnyder works for Toreon.

What is Sebastien Deleersnyder's role at Toreon?

Sebastien Deleersnyder is listed as Co-founder and CTO at Toreon.

What is Sebastien Deleersnyder's email address?

AeroLeads has found 3 work email signals at @toreon.com for Sebastien Deleersnyder at Toreon.

What is Sebastien Deleersnyder's phone number?

AeroLeads has found 1 phone signal(s) with area code 247 for Sebastien Deleersnyder at Toreon.

Where is Sebastien Deleersnyder based?

Sebastien Deleersnyder is based in Ghent Metropolitan Area, Belgium, Belgium while working with Toreon.

What companies has Sebastien Deleersnyder worked for?

Sebastien Deleersnyder has worked for Toreon, Data Protection Institute, Owasp Samm, Owasp Belgium Chapter, and Owasp Foundation.

Who are Sebastien Deleersnyder's colleagues at Toreon?

Sebastien Deleersnyder's colleagues at Toreon include Jarne Peelman, Thomas Brankaer, Wesley Vanhelden, Annemie Ponsaers, and Loebe Dauw.

How can I contact Sebastien Deleersnyder?

You can use AeroLeads to view verified contact signals for Sebastien Deleersnyder at Toreon, including work email, phone, and LinkedIn data when available.

What schools did Sebastien Deleersnyder attend?

Sebastien Deleersnyder holds Middle Management Programme from Vlerick Leuven Gent Management School.

What skills is Sebastien Deleersnyder known for?

Sebastien Deleersnyder is listed with skills including Security, Application Security, Web Application Security, Information Security Management, Information Security, Cissp, Penetration Testing, and Computer Security.

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