Collaborations with
What is your next step
to ensure long-term business success?
Cyber Threat Protection
To ensure your long-term business success, it is critical to protect your systems from a growing number and wide range of cyberattacks.
Sustainable Digitalization
To ensure your technology supports your business processes long-term, digital progress and sustainability need to go hand in hand.
Secure & Green Innovation
To build a strong and lasting market presence, you need to position yourself in a way that stays relevant and meaningful over time.
Long-Lasting Impact
To have a long-lasting and positive business impact, it is essential to trigger a heart-felt motivation.
Not only in customers, but also in staff.
Staff Awareness & Engagement
As long-term success requires teamwork, staff needs to be empowered to make secure decisions, protect data, and act sustainably.
Continuous Improvement
As our world changes rapidly, long-term success requires adapting to emerging risks and challenges. This requires a mindset of ongoing learning.
What customers say
Why work with Erlijn
She has deep expertise across multiple disciplines
- She combines cybersecurity and sustainability to solve two major business challenges at once. This offers unique value that is highly relevant in today’s world.
- She brings rare global insights through her work with the United Nations.
- She uses deep technical skills to spot security threats early.
She solves real problems and creates lasting impact
- She inspires action toward a healthier, safer planet. This highlights her passion and the purpose behind her work.
- She makes complex science and tech content understandable and actionable, increasing outreach and trust.
- She helps translate ideas into clear steps that empower to make a positive difference.
She is an engaging communicator and speaker
- Her presentations inspire action, perfect for motivating both internal teams and the public.
- She turns complexity into compelling stories that build support and drive success. This directly benefits communication, influence, and growth.
- She has over 20 years of experience making complex topics clear and engaging for any audience.
She sees the big picture and connect the dots
- She aligns cybersecurity, sustainability, and business goals for long-term success.
- She speaks the language of both engineers and executives. This is key for bridging gaps, speeding up implementation, and uniting teams.
- Her strategies lead to real-world results. This causes her work to deliver measurable impact, not just ideas.
She is a trusted partner and collaborator
- She brings a global network from the UN, academia, and business.
- She delivers real-world outcomes, backed by a strong history of excellent results. This builds trust that she follows through and makes a measurable difference.
- She maintains long-term collaborations due to her reliability and consistent excellence. This reassures customers of her professionalism and lasting value.
Erlijn's services
She offers all services in English, German, and Dutch
Cyber Threat Protection
- Keynote
- (Live-hack) presentation
- Penetrationtest
Sustainable Digitalization
- Keynote
- Presentation
- Consulting
Secure & Green Innovation
- Workshop
- Presentation
- Consulting
Long-Lasting Impact
- Keynote / Presentation
- Workshop
- Consulting
Staff Awareness & Engagement
- Keynote / Presentation
- Workshop
- Course
Continuous Improvement
- Keynote / Presentation
- Consulting
- Coaching
Erlijn's passion
About Erlijn
She came to protect — with two powerful missions that shape both her work and private life:
Mission: Unhackable. Mission: Sustainable.
As an engaging and insightful hacker, speaker, and cybersecurist, she brings a rare combination of deep technical knowledge, human understanding, and environmental expertise. With a PhD and degrees in IT, psychology, and educational sciences, she offers research-backed insights that are both credible and compelling.
Her keynotes break down complex topics such as cybersecurity, sustainability, and digital ethics into powerful stories that move people — not just to think differently, but to act. She practices what she preaches.
Professional, thoughtful, and genuinely passionate, she’s easy to work with and deeply committed to helping your event and project have a lasting impact.
Let’s take the first step together
I invite you to get in touch for a free call to explore the challenges you're facing or the goals you'd like to achieve.
Together, we can look at your questions and ideas, possibly as a first step toward a fruitful collaboration.
I look forward to hearing from you and learning more about what matters to you!
Get started straight away
Free download, Sustainable Innovation Guide with:
7 Steps to Gain a Competitive Advantage through Sustainable Innovation
To download the Guide, fill in your email address for further instructions. Please also note the double opt-in email.
Copyright © 2025 Sustainable Decisions All rights reserved.