Data protection to a standard: the synergy of the GDPR and ISO 27701

7 min read · Data protection officers (DPOs), legal counsel, compliance managers, CISOs, CEOs

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Introduction: The constant pressure to demonstrate data protection

Since the General Data Protection Regulation (GDPR) entered into force, the strict principle of accountability (Article 5(2) GDPR) has applied in the European Economic Area: organisations must not only act in compliance with data protection law, but must be able to demonstrate this at any time, without gaps, to supervisory authorities and to data subjects.

In practice this often leads to chaotic island solutions: records of processing activities in outdated spreadsheets, uncoordinated data processing agreements and vague deletion concepts.

This is where the international standard ISO/IEC 27701 helps. As a certifiable extension of ISO 27001, it builds a bridge between technical information security and legal data protection. It establishes a comprehensive Privacy Information Management System (PIMS).

What is ISO/IEC 27701?

ISO 27701 is designed as an add-on to ISO 27001. That means: an existing information security management system, or one introduced at the same time, forms the foundation. ISO 27701 supplements this system with specific requirements for the protection of personal data (personally identifiable information – PII).

The standard distinguishes clearly between two roles:

PII controllers: Organisations that decide on the purposes and means of processing.
PII processors: Service providers (for example SaaS providers, data centres, BPO providers) that process personal data on behalf of third parties.

For both roles the standard provides tailored control mechanisms, guidance and documentation standards.

How ISO 27701 operationalises the GDPR requirements

The GDPR formulates legal principles – ISO 27701 translates them into practical management processes:

GDPR principle / requirement	Implementation through ISO 27701 (PIMS)
Privacy by design and by default (Art. 25)	Fixed implementation of data protection impact assessments (DPIA) in the development and procurement cycle.
Rights of data subjects (Arts. 12–22)	Standardised processes and response times for access, rectification, data portability and erasure (“right to be forgotten”).
Processing by processors and the supplier chain (Art. 28)	Systematic review and auditing of sub-processors for data protection conformity.
Duty to notify personal data breaches (Arts. 33 and 34)	Established incident management processes for detecting, documenting and notifying within the 72-hour deadline.
Accountability (Art. 5(2))	A complete audit trail through certified processes and regular independent checks.

The decisive business benefits of a PIMS

Why are more and more B2B organisations investing in ISO 27701 certification?

Competitive advantage in international sales: Customers and groups outside Europe in particular look for service providers that can demonstrably master European data protection standards. An ISO 27701 certificate is a quality mark that is understood worldwide.
Drastic reduction in vendor assessments: Instead of filling in hundreds of individual security and data protection questionnaires by hand, certified organisations present their certificate report.
Protection against fines and reputational damage: Authorities take proven management systems into account when incidents occur and treat them as mitigating evidence of careful risk management.
Seamless synergies: Organisations already certified to ISO 27001 save up to 60 per cent of the effort of implementing ISO 27701, because the documentation structure and the risk model are identical.

The path to dual certification (ISO 27001 + ISO 27701)

Certification to ISO 27701 always takes place in conjunction with ISO 27001:

Combined audit: Both standards can be assessed in a single, combined audit. That saves time, internal resources and audit fees.
Extended Statement of Applicability (SoA): The Statement of Applicability is extended by the data protection controls of ISO 27701 (Annexes A and B).
Focus on PII flows: The auditor analyses in detail how personal data are collected, stored, transferred and irreversibly deleted.

Conclusion

Data protection is not a tiresome exercise for lawyers, but a central trust factor in B2B business. With ISO 27701 you transform legal uncertainty into a robust, certified management system.

Would you like to have your data protection certified to ISO 27701?
Discover our services around ISO 27001 and ISO 27701 or request a tailored audit proposal via our pricing page.