Secure your health data with HDS-certified hosting.
Centralize, share, and protect your health data in an environment compliant with HDS, GDPR, and ISO requirements, hosted in Europe.
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Healthcare institutions are facing critical challenges.
Patient records, exam results, imaging, prescriptions: health data is among the most sensitive information there is. Voltn (formerly NetExplorer) hosts it in a sovereign, HDS-certified cloud designed to protect it.

Patient data protection
Respecting medical confidentiality and privacy
Complexity of exchanges between stakeholders
Increase in cyberattacks
HDS
The Health Data Hosting (HDS) certification confirms that a host's procedures comply with the requirements for hosting personal health data. Voltn is HDS certified across all six activities in the framework, from the data center to the software.
data center to software.
It guarantees
Who is affected?
Risk of non-compliance
GDPR
In compliance with GDPR, the Voltn sovereign cloud processes its clients' personal data only within the scope of the services provided. Individuals authorized to handle this data are subject to a legal obligation of confidentiality.
It guarantees
Who is affected?
Risk of non-compliance
ISO 27001 standard
ISO 27001 certification attests to an audited and proven information security management system. It forms the foundation of HDS certification, representing the majority of its criteria. At Voltn, it covers the entire platform.
It guarantees
Who is affected?
Risk of non-compliance
ISO 9001
ISO 9001 certification confirms Voltn's rigorous organization in meeting client needs. It demonstrates a commitment to service quality and continuous improvement.
It guarantees
Who is affected?
Risk of non-compliance
NIS2
The European NIS 2 directive strengthens cybersecurity obligations for essential and important entities. Healthcare is among the highly critical sectors it covers.
It guarantees
Who is affected?
Risk of non-compliance
- Data encryption and antivirus protection
- Intrusion and leak protection
- HDS certification for all activities
- GDPR and NIS2 compliance
- Hosting exclusively in France
- Protection against extraterritorial legislation
- Granular access rights by department or profile
- Full activity history
- Sharing between healthcare professionals
- Co-editing and teamwork
The pillars of Voltn
Solutions tailored to your needs
Voltn Share secures your medical document exchanges with external parties. Voltn Workspace centralizes storage and collaboration within your facility.
External file sharing
Encrypted exchanges with external partners
Password or SMS code protection
Secure upload link
Full traceability of exchanges
Custom portal reflecting your institution's branding





The enterprise file platform
Access management by department or profile
Real-time collaboration
Mobile app, even offline
eIDAS-compliant electronic signature
Version history and anti-deletion trash bin





Practical use cases in the healthcare sector
Hospital & clinic
With thousands of employees, dozens of departments, and files circulating between caregivers, administrative staff, and external partners, a hospital facility operates at the pace of massive and sensitive document exchanges. Voltn structures it all: a centralized secure space, department-specific permissions, complete audit trails, and compartmentalization that protects every perimeter.
HDS and GDPR compliance
Medical practices & CPTS
Community medicine, coordinated care, and territorial health professional communities: professionals often share confidential data between multiple facilities using makeshift tools. Voltn provides the framework: files remain stored in France, protected from extraterritorial laws, each professional accesses only their designated scope, and the mobile app supports home visits, even when offline.
Laboratories & imaging centers
Prescriptions, certificates, lab results, and large imaging files: laboratories collect and share sensitive documents continuously with both patients and prescribers. Voltn streamlines both directions: an upload link to securely collect patient documents, and result sharing via protected links with no size limits, including traceability for every view.
Health insurance & mutuals
Claim forms, medical records, and coverage files: supplementary health insurance providers handle health data as defined by the Public Health Code, which carries mandatory HDS certification. Voltn provides them with a certified environment: document collection via upload links, department-specific partitioned spaces, and traceability that logs every instance of access to medical files.
What about other sectors?
Public institutions
Non-profits and NGOs
Transport and logistics
96% of our clients recommend us
Solutions for every sector
FAQ
Where is health data hosted?
Exclusively in France, in Tier 3+ and Tier 4 compliant data centers. No health data is transferred to any country outside the European Economic Area, keeping it beyond the reach of the Cloud Act.
How can patient data be protected against cyberattacks?
Through encryption, antivirus scanning, real-time ransomware detection, two-factor authentication, granular access rights management, and full audit trails. Furthermore, every file is replicated across three storage media in two separate data centers.
What is the difference between HDS and ISO 27001?
ISO 27001 is an international standard for information security management. It serves as the foundation for HDS certification, accounting for the majority of its criteria. HDS certification adds specific requirements for hosting health data in France. Voltn holds both.
Must a healthcare facility host its data with an HDS-certified provider?
Yes. Health data collected during prevention, diagnostic, care, or medico-social monitoring activities must be hosted by an HDS-certified provider, in accordance with Article L1111-8 of the Public Health Code and Decree No. 2018-137. Voltn is HDS-certified for all six activities in the framework.
How can medical documents be shared between healthcare professionals?
Via a secure Voltn Share link: encrypted, protected by a password or SMS code, with an expiration date and tracking for every access. Large files such as medical imaging can be transferred with no size limits.

But let's be honest, our cloud-based file storage and sharing solution is just easier.

