SecNumCloud Guide: how to achieve compliance?
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Updated on ·
By 
Bertrand Bucelle · 6 min read
In brief
- SecNumCloud is the ANSSI framework that qualifies trusted cloud offerings in France. For a provider, achieving compliance means having its cloud service qualified against very high security requirements, including protection against extraterritorial laws — a criterion that has become strategic for sensitive data.
What is SecNumCloud?
SecNumCloud is the framework developed by ANSSI to qualify 'trusted' cloud offerings. It defines a set of very high-level security requirements that a provider must meet in order to be qualified and thereby benefit from official recognition.
Its distinguishing feature compared to international standards lies in its sovereignty dimension: beyond technical security, it requires guarantees regarding the location of data and processing within the EU, the governance of the entity, and above all immunity from extraterritorial laws that could compel a provider subject to foreign law to disclose data.
This qualification forms part of the French and European 'trusted cloud' strategy, aimed at reducing dependence on providers subject to non-European jurisdictions for the most sensitive data.
Who is affected?
SecNumCloud primarily concerns cloud providers targeting the sensitive data market, and indirectly their customers who must choose a qualified cloud.
- Cloud service providers (IaaS, PaaS, SaaS) targeting trusted cloud.
- Public administrations and essential service operators required to host sensitive data.
- Companies handling strategic data and concerned about digital sovereignty.
- SaaS publishers wishing to rely on a qualified infrastructure.
The key requirements (including data sovereignty)
SecNumCloud combines enhanced security requirements and sovereignty guarantees that clearly distinguish it from conventional certifications.
| Dimension | SecNumCloud Requirement |
|---|---|
| Technical security | Level above ISO 27001, enhanced controls |
| Location | Data and processing within the EU |
| Governance | Entity control not subject to non-European law |
| Extraterritorial immunity | Protection against third-country injunctions |
| Operations | Staff and administration supervised and locally based |
SecNumCloud, ISO 27001, HDS and NIS2
SecNumCloud sits at the top of a set of requirements and works in conjunction with other frameworks.
- ISO 27001: the security foundation; SecNumCloud goes further, particularly on data sovereignty.
- HDS: for health data, HDS remains required; SecNumCloud adds the sovereignty dimension.
- NIS2: a qualified cloud strengthens supply chain security.
- Trusted cloud: SecNumCloud is the reference technical foundation for trusted cloud in France.
What penalties apply in the event of non-compliance?
SecNumCloud is a voluntary qualification: no fines, but critical market access implications — particularly in the public sector — and a risk of losing qualification in the event of non-compliance.
| Situation | Consequence | Implication |
|---|---|---|
| Lack of qualification | No direct legal penalty | Exclusion from sensitive data markets |
| Assessment infringements | Refusal or withdrawal of qualification | Loss of sovereign advantage |
| Unmet mandatory requirement | Ineligibility for certain public contracts | Loss of strategic contracts |
Common mistakes to avoid
- Believing that SecNumCloud is equivalent to ISO 27001: it goes much further, particularly on sovereignty.
- Underestimating the requirements for immunity from extraterritorial laws, which are often structural.
- Engaging in the process without a real market rationale to justify it.
- Neglecting the ISO 27001 foundation, which is a de facto prerequisite.
- Confusing SecNumCloud (cloud sovereignty) and HDS (healthcare hosting), which can be combined.
- Allowing the qualification to degrade due to insufficient monitoring of requirements.
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How to achieve compliance: the 5-step roadmap
Step 1 — Assess the Relevance of the Qualification
Determine whether SecNumCloud is a relevant objective: are you targeting public procurement, sensitive data, or a sovereign positioning? The qualification is demanding and only makes sense if it addresses a genuine market need.
This analysis prevents you from committing to a heavy process without any return.
Step 2 — Consolidate the Security Foundation
Implement or strengthen a high-level ISMS (ISO 27001), as SecNumCloud builds on and exceeds its requirements. A robust foundation is essential before considering the qualification.
First address the fundamental security gaps.
Step 3 — Address Sovereignty Requirements
Ensure the localisation of data and processing within the EU, governance not subject to non-European law, and immunity from foreign injunctions. This is the defining core of SecNumCloud.
These requirements may involve structural choices in organisation and architecture.
Step 4 — Prepare for the ANSSI Evaluation
Compile the qualification dossier and prepare for the evaluation by ANSSI or an appointed assessor. The process is thorough and requires complete, accurate documentation.
Plan ahead for the timelines, which are significant for this type of qualification.
Step 5 — Obtain and Maintain the Qualification
Obtain the qualification, then sustain it over time by monitoring requirements and undergoing re-evaluations. Leverage it as a strong commercial differentiator.
The qualification requires ongoing maintenance: sovereignty and security must remain at the required level.