Knowledge base

September 02, 2025

Preventing Data Breaches – ISO 27001 Approach

 

Why preventing data breaches is crucial

In the Netherlands, 1 in 5 SMEs face a data breach every year. The consequences are often disastrous: high fines from the Personal Data Authority (AP), reputation damage and loss of customer trust. Since the introduction of the AVG legislation, compliance is no longer an option, but an absolute requirement for every organization.

At ALTA-ICT, we understand that cybersecurity and data breach prevention are not only about technology, but also about human behavior and strategic choices. With our ISO27001 and NEN7510 certified approach, we help Dutch organizations prevent data breaches and ensure business continuity.

In this article, you’ll discover what data breach prevention entails, how your organization can implement it step by step, what pitfalls to avoid, and how to realize a demonstrably higher ROI with ALTA-ICT.

What is data breach prevention and why essential for Dutch companies?

  • Definition of a data breach

  • Dutch context: AVG, mandatory data breach notification within 72 hours, AP oversight

  • Impact for SMEs, healthcare, financial institutions and government

  • Common misconception: “a firewall is enough”

 

How to prevent data breaches – Implementation in 4 steps

Step 1: Assessment & risk analysis

  • Security audit

  • Privacy Impact Assessment (PIA).

  • AVG/GDPR compliance check

Step 2: Design & preparation

  • Technical architecture (encryption, access management)

  • Awareness training for employees

  • Change management process

Step 3: Implementation & monitoring

  • 24/7 SOC monitoring

  • Real-time threat detection

  • Phased rollout without downtime

Step 4: Optimization & maintenance

  • Periodic penetration testing

  • Certification audits (ISO27001/NEN7510)

  • Continuous improvement with ALTA-ICT’s methodology

 

Common mistakes in data breach prevention

  • Deploying only technical solutions without awareness

  • Not having an incident response plan ready

  • Late reporting to the AP

  • Not conducting periodic audits

 

ROI of data breach prevention for SMEs

  • Cost of a data breach in NL averages €100,000+

  • ALTA-ICT customers reduce risk by >70%

  • Case: SME client Amsterdam saved €45,000 per year through preventive approach

 

The ALTA-ICT approach: why we make a difference

  • ISO27001, ISO9001 and NEN7510 certified

  • Dutch market specialization (AVG, DigiD, AP guidelines)

  • 24/7 monitoring & support

  • Customized security awareness trainings

 

FAQ – Data breach prevention in the Netherlands

  • What is a data breach under the AVG?

  • What are the AP’s fines?

  • How soon should I report a data breach?

  • What certifications are mandatory in NL?

  • How does ALTA-ICT help with compliance?

 

Conclusion

Preventing data breaches is not a luxury, but a must-have for Dutch organizations. With a certified approach, real-time monitoring and awareness training, ALTA-ICT helps your organization minimize risk and maintain trust.

👉 Book a free consultation today: alta-ict.co.uk/free-consultation

 

Reference

¹https://www.linkedin.com/posts/altaict_altaict-cybersecurity-avg-activity-7359905018344263680-wSL5

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Datalekken voorkomen ISO 27001 gecertificeerd