--- title: SpySecure® | Knowledge | Data breach description: Data breach | Practical cybersecurity guidance for SMEs, covering employee security, compliance, digital risks and protection against cyber threats. --- ✓ Trusted by **100+** businesses★★★★★ **5.0** on Google[View our plans →](https://www.spysecure.nl/en/cybersecurity-packages?hsLang=en) [![SpySecure](https://www.spysecure.nl/hs-fs/hubfs/SpySecure%20logo/logo%201%20(bold)%20-%20no%20white%20space%20-%20resized.png?width=200&height=40&name=logo%201%20(bold)%20-%20no%20white%20space%20-%20resized.png)](https://www.spysecure.nl/en/?hsLang=en) - Cybersecurity for businesses - All-in-one cybersecurity - Who it's for - Our approach - Pricing [NL](https://www.spysecure.nl/nl-nl/kennis)[EN](https://www.spysecure.nl/en/knowledge/tag/data-breach) [Contact](https://www.spysecure.nl/en/contact?hsLang=en) - [Why cybersecurity?Risks and consequences for SMEs](https://www.spysecure.nl/en/why-cybersecurity-sme?hsLang=en) - [What security do you need?The security layers explained](https://www.spysecure.nl/en/security-layers-smes?hsLang=en) - [BlogInsights and current threats](https://www.spysecure.nl/en/knowledge) - [WebinarsJoin live or watch on demand](https://www.spysecure.nl/events?hsLang=en) - [FAQQuick answers to your questions](https://www.spysecure.nl/en/faq?hsLang=en) NIS2 Does NIS2 apply to your business? Read what the law requires and how to show your security is in order. [Go to NIS2 →](https://www.spysecure.nl/en/nis2?hsLang=en) [Managed SecurityAll security layers, fully managed and monitored 24/7→](https://www.spysecure.nl/en/managed-security?hsLang=en) [Security layers](https://www.spysecure.nl/en/approach?hsLang=en) - [Endpoints / devices](https://www.spysecure.nl/en/endpoint-security?hsLang=en) - [M365 & Google Workspace](https://www.spysecure.nl/en/microsoft-365-google-workspace-security?hsLang=en) - [Cloud & SaaS](https://www.spysecure.nl/en/cloud-security?hsLang=en) - [Email](https://www.spysecure.nl/emailbeveiliging?hsLang=en) - [Identities](https://www.spysecure.nl/identiteitenbeveiliging?hsLang=en) - [Backups](https://www.spysecure.nl/backups?hsLang=en) Training - [Employee training](https://www.spysecure.nl/en/training?hsLang=en) - [Phishing test](https://www.spysecure.nl/en/phishing-test?hsLang=en) Compliance - [Compliance management](https://www.spysecure.nl/en/compliance?hsLang=en) - [NIS2 compliance](https://www.spysecure.nl/en/nis2?hsLang=en) Scans & extras - [Vulnerability scan](https://www.spysecure.nl/en/vulnerability-scan?hsLang=en) - [Penetration test](https://www.spysecure.nl/pen-test?hsLang=en) - [Business password manager](https://www.spysecure.nl/en/business-password-manager?hsLang=en) - [Domain protection](https://www.spysecure.nl/en/domainprotection?hsLang=en) Plans From €9.99 per licence per month. Fully managed, including all the security software you need. [View the plans →](https://www.spysecure.nl/en/cybersecurity-packages?hsLang=en) Businesses - [Startups & scale-ups](https://www.spysecure.nl/en/business-cybersecurity?hsLang=en) - [SMEs](https://www.spysecure.nl/en/business-cybersecurity?hsLang=en) Sectors - [E-commerce](https://www.spysecure.nl/en/cybersecurity-ecommerce?hsLang=en) - [Education](https://www.spysecure.nl/en/business-cybersecurity?hsLang=en) - [Healthcare](https://www.spysecure.nl/en/business-cybersecurity?hsLang=en) - [Professional services](https://www.spysecure.nl/en/business-cybersecurity?hsLang=en) Partners - [MSPs](https://www.spysecure.nl/en/partners?hsLang=en) - [IT partners](https://www.spysecure.nl/en/partners?hsLang=en) Customer stories ★★★★★ Trusted by 100+ businesses Read how business owners placed their security with us. [Read the customer stories →](https://www.spysecure.nl/en/our-customers?hsLang=en) - [Our approachHow we secure your business](https://www.spysecure.nl/en/approach?hsLang=en) - [How it worksFrom introduction to 24/7 monitoring](https://www.spysecure.nl/en/how-it-works?hsLang=en) - [Customer storiesExperiences of our customers](https://www.spysecure.nl/en/our-customers?hsLang=en) - [About usThe team behind SpySecure®](https://www.spysecure.nl/en/about-us?hsLang=en) Google reviews ★★★★★ 5.0 on Google Our customers rate us 5 stars. [What our customers say →](https://www.spysecure.nl/en/our-customers?hsLang=en) - [All-in-one plansFully managed · from €9.99 per licence](https://www.spysecure.nl/en/cybersecurity-packages?hsLang=en) - [Individual servicesPer service · from €4.99 per licence](https://www.spysecure.nl/en/security-services?hsLang=en) [![SpySecure](https://www.spysecure.nl/hs-fs/hubfs/SpySecure%20logo/logo%201%20(bold)%20-%20no%20white%20space%20-%20resized.png?width=200&height=40&name=logo%201%20(bold)%20-%20no%20white%20space%20-%20resized.png)](https://www.spysecure.nl/en/?hsLang=en) Cybersecurity for businesses - [Why cybersecurity?Risks and consequences for SMEs](https://www.spysecure.nl/en/why-cybersecurity-sme?hsLang=en) - [What security do you need?The security layers explained](https://www.spysecure.nl/en/security-layers-smes?hsLang=en) - [BlogInsights and current threats](https://www.spysecure.nl/en/knowledge) - [WebinarsJoin live or watch on demand](https://www.spysecure.nl/events?hsLang=en) - [FAQQuick answers to your questions](https://www.spysecure.nl/en/faq?hsLang=en) All-in-one cybersecurity [Managed SecurityAll security layers, fully managed and monitored 24/7→](https://www.spysecure.nl/en/managed-security?hsLang=en) [Security layers](https://www.spysecure.nl/en/approach?hsLang=en) - [Endpoints / devices](https://www.spysecure.nl/en/endpoint-security?hsLang=en) - [M365 & Google Workspace](https://www.spysecure.nl/en/microsoft-365-google-workspace-security?hsLang=en) - [Cloud & SaaS](https://www.spysecure.nl/en/cloud-security?hsLang=en) - [Email](https://www.spysecure.nl/emailbeveiliging?hsLang=en) - [Identities](https://www.spysecure.nl/identiteitenbeveiliging?hsLang=en) - [Backups](https://www.spysecure.nl/backups?hsLang=en) Training - [Employee training](https://www.spysecure.nl/en/training?hsLang=en) - [Phishing test](https://www.spysecure.nl/en/phishing-test?hsLang=en) Compliance - [Compliance management](https://www.spysecure.nl/en/compliance?hsLang=en) - [NIS2 compliance](https://www.spysecure.nl/en/nis2?hsLang=en) Scans & extras - [Vulnerability scan](https://www.spysecure.nl/en/vulnerability-scan?hsLang=en) - [Penetration test](https://www.spysecure.nl/pen-test?hsLang=en) - [Business password manager](https://www.spysecure.nl/en/business-password-manager?hsLang=en) - [Domain protection](https://www.spysecure.nl/en/domainprotection?hsLang=en) Who it's for Businesses - [Startups & scale-ups](https://www.spysecure.nl/en/business-cybersecurity?hsLang=en) - [SMEs](https://www.spysecure.nl/en/business-cybersecurity?hsLang=en) Sectors - [E-commerce](https://www.spysecure.nl/en/cybersecurity-ecommerce?hsLang=en) - [Education](https://www.spysecure.nl/en/business-cybersecurity?hsLang=en) - [Healthcare](https://www.spysecure.nl/en/business-cybersecurity?hsLang=en) - [Professional services](https://www.spysecure.nl/en/business-cybersecurity?hsLang=en) Partners - [MSPs](https://www.spysecure.nl/en/partners?hsLang=en) - [IT partners](https://www.spysecure.nl/en/partners?hsLang=en) Our approach - [Our approachHow we secure your business](https://www.spysecure.nl/en/approach?hsLang=en) - [How it worksFrom introduction to 24/7 monitoring](https://www.spysecure.nl/en/how-it-works?hsLang=en) - [Customer storiesExperiences of our customers](https://www.spysecure.nl/en/our-customers?hsLang=en) - [About usThe team behind SpySecure®](https://www.spysecure.nl/en/about-us?hsLang=en) Pricing - [All-in-one plansFully managed · from €9.99 per licence](https://www.spysecure.nl/en/cybersecurity-packages?hsLang=en) - [Individual servicesPer service · from €4.99 per licence](https://www.spysecure.nl/en/security-services?hsLang=en) [Contact](https://www.spysecure.nl/en/contact?hsLang=en) [NL](https://www.spysecure.nl/nl-nl/kennis)[EN](https://www.spysecure.nl/en/knowledge/tag/data-breach) # Knowledge Base Practical knowledge about cybersecurity, employees, compliance and digital risks for SMEs. All topics Endpoint security Phishing AI security Cyber attack Cybersecurity for SMEs Data breach Employee security GDPR Google Workspace Managed Security Microsoft 365 Patch management Regulation Vulnerability management [![Data breach timeline: stop the leak in hour 1, record what happened on day 1, report to the regulator within 72 hours, and inform customers if needed.](https://www.spysecure.nl/hubfs/B6_featured_image_EN-1.png)](https://www.spysecure.nl/en/knowledge/data-breach-what-to-do-sme) [Data breach](https://www.spysecure.nl/en/knowledge/tag/data-breach) [GDPR](https://www.spysecure.nl/en/knowledge/tag/gdpr) ## [Customer data stolen? What to do after a data breach](https://www.spysecure.nl/en/knowledge/data-breach-what-to-do-sme) In February 2026, criminals stole customer data from Dutch telecom provider Odido. It concerned 6.2 million customers: names, addresses, phone numbers and bank account numbers. Odido ... 18 September 2026 [Read article](https://www.spysecure.nl/en/knowledge/data-breach-what-to-do-sme) [![SpySecure](https://www.spysecure.nl/hs-fs/hubfs/SpySecure%20logo/logo%20white%20(bold)%20-%20transparent%20-%20sized.png?width=200&height=34&name=logo%20white%20(bold)%20-%20transparent%20-%20sized.png)](https://www.spysecure.nl/en/?hsLang=en) Fully managed cybersecurity, training and compliance for scale-ups and SMEs. - 24/7 monitoring, detection and response - Monthly reporting ### Solutions - [Managed Security](https://www.spysecure.nl/en/managed-security?hsLang=en) - [Compliance](https://www.spysecure.nl/compliance?hsLang=en) - [Security Awareness Training](https://www.spysecure.nl/training?hsLang=en) - [NIS2](https://www.spysecure.nl/nis2?hsLang=en) - [Domain protection](https://www.spysecure.nl/domeinbescherming?hsLang=en) - [For IT partners](https://www.spysecure.nl/partners?hsLang=en) ### Pricing - [All-in-one plans](https://www.spysecure.nl/en/cybersecurity-packages?hsLang=en) - [Individual services](https://www.spysecure.nl/en/security-services?hsLang=en) ### Resources - [Events and webinars](https://www.spysecure.nl/events?hsLang=en) - [Blog](https://www.spysecure.nl/kennisbank?hsLang=en) - [FAQ](https://www.spysecure.nl/en/faq?hsLang=en) - [Customer stories](https://www.spysecure.nl/en/our-customers?hsLang=en) ### Contact - [Book an introduction](https://www.spysecure.nl/en/contact?hsLang=en) - [contact@spysecure.nl](mailto:contact@spysecure.nl) - [+31 20 261 2897](tel:+31202612897) ### Newsletter Once a month: the key threats and tips for your business. 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