The CNIL digital safe label : from a certification tool to a compliance framework in the GDPR era
Introduction
The creation of the “digital safe” label by the French Data Protection Authority (CNIL) formed part of a broader structural evolution of digital law, driven by the rise of dematerialization and the growing need for data security. As companies increasingly outsourced the storage of their strategic information, the reliability of storage systems became a central legal issue, both in terms of personal data protection and electronic evidence.
However, the entry into force of the General Data Protection Regulation (GDPR) in 2018 significantly reshaped the regulatory tools available to supervisory authorities. In this context, the CNIL has gradually abandoned its system of national labels in favour of European certification mechanisms, notably those provided for under Article 42 of the GDPR.
As a result, the “digital safe” label no longer constitutes an operational mechanism. It nevertheless remains a key reference for understanding the legal and technical requirements applicable to secure digital storage services.
Definition of a digital safe under CNIL guidelines
In its reference framework dated January 23, 2014, the CNIL defined the digital safe as a secure online storage space enabling the preservation of electronic documents in various formats.
Such systems rely on an architecture ensuring that both data and associated metadata remain accessible exclusively to the data subject or to authorised individuals. This strict access control is a fundamental component of personal data protection.
From a legal standpoint, a digital safe is based on three core guarantees :
- confidentiality,
- integrity,
- availability of the stored information.
It is therefore not merely a technical tool, but a mechanism designed to ensure both data security and the evidentiary value of electronic documents.
The rationale behind the CNIL digital safe label
The CNIL digital safe label was introduced in response to the increasing need to structure a market driven by the electronic storage of high-value legal documents, such as contracts, employment data, and accounting records. Based on the French Data Protection Act of January 6, 1978, this mechanism enabled the CNIL to certify that digital services complied with high data protection standards.
The label pursued a dual objective :
- On the one hand, it provided users with a trusted benchmark to identify secure solutions.
- On the other hand, it contributed to structuring the market by establishing objective criteria for reliability and security.
However, this national approach was fundamentally challenged by the European harmonisation introduced by the GDPR. The Regulation now promotes certification mechanisms at EU level, aimed at ensuring consistency across the digital market within the Union. Consequently, the CNIL no longer issues labels under the French Data Protection Act.
Conditions for obtaining the label
The CNIL framework was based on twenty-two cumulative requirements covering the entire data lifecycle. In particular, it required that the provider be responsible both for the technical operation of the service and its provision to end users, thereby ensuring full accountability for all data processing activities.
The requirements addressed access security, user rights management, the robustness of cryptographic mechanisms, and the conditions governing data storage and retrieval. Particular emphasis was also placed on traceability and transparency towards users.
The system further required continuous compliance, based on regular audits and proactive risk management. Although no longer in force, these requirements remain highly relevant under the GDPR, particularly with regard to data security obligations.
The specific regime for sensitive data
The CNIL framework established a clear distinction between ordinary data and sensitive data, in particular health data, which were subject to enhanced safeguards. Due to their nature, such data could not be stored in a digital safe without complying with specific requirements, notably the use of an authorised hosting provider, as provided for under Article L1111-8 of the French Public Health Code.
This approach anticipated the GDPR’s risk-based framework, which imposes heightened protection for sensitive data and requires additional safeguards in terms of security and processing. It reflects a hierarchy of risks that now lies at the core of European data protection law.
Impact on compliance and electronic evidence
Although predating the GDPR, the CNIL framework anticipated many of its core principles, particularly in relation to data security and risk management. However, in the absence of a maintained labelling system, the use of a digital safe can no longer be presented as formal proof of compliance.
It nevertheless constitutes a relevant indicator of the implementation of appropriate technical and organisational measures within the meaning of Article 32 GDPR, thereby contributing to the demonstration of the accountability principle. The role of the framework has therefore shifted : from a certification tool, it has become a technical and evidentiary benchmark that may be relied upon in the context of audits or litigation.
In addition, the requirements associated with digital safes should be considered in light of Regulation (EU) No 910/2014 of July 23, 2014 (eIDAS), which governs trust services and aims to ensure the legal validity of electronic documents across the European Union. Although it does not directly regulate storage systems, it enhances the reliability of stored documents by ensuring their integrity, traceability and enforceability, notably through mechanisms such as electronic signatures and time-stamping.
Conclusion
While the creation of the CNIL digital safe label marked a significant step in the legal framework governing digital storage services, its discontinuation in favour of European certification mechanisms reflects a broader evolution in regulatory approaches.
This development illustrates the transition from a national labelling system to a European framework based on accountability and the ongoing demonstration of compliance, thereby confirming the central role of the accountability principle in the regulation of the digital economy.
Dreyfus & Associés assists its clients in managing complex intellectual property matters by providing tailored advice and comprehensive operational support for the full protection of intellectual property rights.
Nathalie Dreyfus with the support of the entire Dreyfus team.
Q&A
1. What is the difference between a digital safe and a standard cloud storage solution ?
A digital safe differs from a cloud service due to its legal framework and enhanced safeguards. It incorporates mechanisms ensuring traceability, document integrity, and long-term preservation under conditions that guarantee evidentiary value. Although no longer based on a formal CNIL label, these requirements remain consistent with the security standards expected under the GDPR and the eIDAS Regulation.
2. Does the CNIL digital safe label still exist ?
The CNIL’s labelling system, as it existed prior to the GDPR, has been discontinued. It has been replaced by European certification mechanisms under Article 42 GDPR. However, no equivalent certification specifically dedicated to digital safes currently exists.
3. Are there equivalent requirements today ?
The requirements underlying the former CNIL label continue to exist under the GDPR, particularly the obligation to implement appropriate technical and organisational measures (Article 32), as well as through sectoral standards and best practices. The 2014 CNIL framework remains a useful reference in this respect.
4. How does a digital safe contribute to GDPR compliance ?
The use of a digital safe aligned with high security standards demonstrates the implementation of appropriate safeguards. While it no longer constitutes formal certification, it remains a relevant evidentiary element in demonstrating compliance with the accountability principle.
5. Are documents stored in a digital safe enforceable abroad ?
Yes, provided that their integrity, traceability and reliability can be demonstrated. The use of a secure digital safe may strengthen evidentiary value, particularly within the EU framework under eIDAS, although recognition ultimately depends on applicable procedural rules in each jurisdiction.
This publication is intended for general public guidance and to highlight issues. It is not intended to apply to specific circumstances or to constitute legal advice.

















