What is the difference between data protection and information security?
Data protection is about protecting individuals’ right to privacy when processing personal data. Information security is about protecting all business-critical information — regardless of whether it contains personal data or not.
The concepts overlap: GDPR requires technical and organisational security measures (Article 32), which in practice means you need functioning information security to achieve data protection. But information security extends further — it also protects trade secrets, system documentation, contracts and other sensitive data not covered by GDPR.
With the Cybersecurity Act, an additional layer is added: requirements for systematic risk management, incident reporting and documented management responsibility for organisations covered by NIS2 directive sectors. Three regulatory frameworks, one reality — and a strong reason not to build three separate silos.
The key question: Does your organisation handle data protection, information security and NIS2 as separate tracks — or as an integrated whole?
Why the separation creates problems in practice
In many organisations, data protection is owned by a Data Protection Officer (DPO) while information security sits with IT or a CISO. This is logical organisationally, but operationally it often leads to:
The DPO conducts Data Protection Impact Assessments (DPIAs) under GDPR. The CISO performs risk analyses according to ISO 27005 or proprietary models. Often it concerns the same systems and the same threats — but the analyses are done in separate documents with different methodologies.
Encryption requirements in the GDPR register don't always match the security measures documented in the organisation's ISMS. Result: gaps in reality, excess in documentation.
When an external auditor reviews ISO 27001 compliance and a supervisory authority reviews GDPR handling, the organisation needs to present a coherent picture. Separate systems make this harder.
The Cybersecurity Act requires management to approve security measures and undergo training. A management team receiving separate reports from the DPO, CISO and NIS2 responsible person struggles to make informed decisions.
Three principles for coordinating data protection and information security
1. Shared risk model
Instead of running parallel risk processes — use a shared risk model that covers both information assets and personal data processing activities. By linking GDPR processing activities to the same asset register that information security uses, you only need to identify threats and vulnerabilities once.
In practice: Map your information assets and personal data processing activities in the same register. Link each processing activity to the systems and assets it concerns. Conduct the risk assessment once — considering both privacy risks and security risks.
2. Shared controls register
Security measures such as firewalls, encryption, access control and logging protect both personal data and other information. Document them once, in a shared controls register, and map them against relevant requirements — regardless of whether the requirement comes from GDPR, the Cybersecurity Act or ISO 27001.
In practice: Create a link between your controls and the specific requirements they address. A single control can address Annex A in ISO 27001, Article 32 of GDPR and an obligation under the Cybersecurity Act — but this is only visible if you have a structured mapping.
3. Coordinated incident management
A security incident that affects personal data is by definition a personal data breach. But the deadlines and recipients differ:
- GDPR: Notification to the supervisory authority within 72 hours if the incident is likely to result in a risk to data subjects’ rights and freedoms.
- Cybersecurity Act (NIS2): Early warning to the competent authority within 24 hours, follow-up report within 72 hours, and final report within one month.
These deadlines run in parallel but have different recipients and different thresholds. Coordinating these into a single process — with trigger logic that automatically escalates to the correct reporting channel — saves time and reduces the risk of missing deadlines.
In practice: Build an incident process that from the start classifies whether personal data is affected (→ GDPR notification to the supervisory authority) and whether the incident is significant under the Cybersecurity Act (→ early warning to the competent authority). The same basic investigation feeds both tracks.
How the Cybersecurity Act makes coordination even more important
The Cybersecurity Act (2025:1506) entered into force on 15 January 2026 and implements the NIS2 Directive into Swedish law. The act requires systematic risk management, incident reporting and management responsibility — requirements that overlap with both GDPR and ISO 27001, but that also go further in several areas:
Management’s personal responsibility. Management must approve security measures, undergo training and can be held personally liable for deficiencies. This is a stronger requirement than what GDPR or ISO 27001 impose.
Supply chain. Explicit requirement for supplier risk assessment, including their security quality, development processes and vulnerability management.
Stricter timeframes. 24 hours for early warning — including weekends and nights — requires that the incident process is tested and works in practice, not just on paper.
Organisations that already have separate silos for data protection and information security now have a third one to manage. The alternative? An integrated approach where all frameworks — GDPR, the Cybersecurity Act and ISO 27001 — are managed in the same management system with shared processes.
Summary
Data protection and information security are not opposites — they are prerequisites for each other. By coordinating risk management, controls and incident processes, you avoid duplication and achieve a stronger, more coherent level of protection. With the Cybersecurity Act in force and three parallel regulatory frameworks to manage — GDPR, NIS2 and ISO 27001 — it’s better to build it right from the start than to integrate three separate systems after the fact.
Frequently asked questions
Do we need an ISMS if we already have GDPR routines?
Yes, in practice. GDPR's requirements for security measures (Article 32) presuppose systematic processes for identifying risks, implementing measures and following up — which is essentially an information security management system. With the Cybersecurity Act, the requirement for systematic processes becomes explicit for covered organisations.
Can we use ISO 27001 to demonstrate GDPR compliance?
ISO 27001 doesn't cover all GDPR requirements (such as data subject rights, legal basis and impact assessments), but it provides a strong foundation for technical and organisational security measures. Many supervisory authorities view ISO 27001 certification positively as evidence of an adequate security level.
Which roles are needed — DPO, CISO or both?
It depends on the organisation's size and complexity. Regardless of whether it's one or two people, responsibilities and mandates need to be clearly defined. The DPO and CISO should have shared processes, joint risk assessments and coordinated reporting to management.
Which tools support both areas?
A GRC platform that manages risk registers, controls, incidents and framework requirements in a common structure eliminates duplication. Securapilot is built precisely for this — with ISO 27005-based risk management, GDPR module, supplier management and audit against ISO 27001, GDPR and NIS2 in the same platform.
