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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HDS certified, covering all 6 levels
ISO 27001 & ISO 9001 certified
Advanced protection (encryption, antivirus, traceability)
100% European hosting

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

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Medical records, results, histories: nothing is more precious than health. Collected personal data must live in a perfectly controlled environment, protected against any unauthorized access or alteration.

Respecting medical confidentiality and privacy

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Medical confidentiality does not stop at the office door: it follows every file, every share, and every consultation. Confidentiality must be guaranteed from end to end.

Complexity of exchanges between stakeholders

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Laboratories, medical facilities, radiology centers, pharmacies: all these stakeholders must share confidential information quickly and effectively. Without a common framework, every exchange relies on improvised security.

Increase in cyberattacks

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In 2025, over 700 healthcare organizations reported a cybersecurity incident. To cope, institutions are implementing strict governance and demanding expert cloud providers.
Certification HDS, Hébergeur de Données de Santé

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

A certified framework for health data hosting
The confidentiality and availability of this data
Compliance with the French legal framework (Article L1111-8)

Who is affected?

Any host of health data collected during prevention, diagnosis, care, or medico-social monitoring activities
Hospitals, clinics, laboratories, and medical practices
Mutual insurance companies, health insurance providers, and e-health software publishers

Risk of non-compliance

Inability to legally host health data
Regulatory penalties
Leakage of highly sensitive data
Conformité au RGPD

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

Protecting patient and staff data
A binding European legal framework
Effective rights for data subjects

Who is affected?

Public and private healthcare facilities
Laboratories, imaging centers, and pharmacies
Mutual insurance companies and health insurers

Risk of non-compliance

CNIL sanctions
Liability of the organization called into question
Loss of patient trust
Certification ISO 27001

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

Information security certified by an independent audit
Cyber risk management
Continuous improvement of security processes

Who is affected?

Organizations subject to an information systems security policy
Organizations handling sensitive health data
Stakeholders audited by their supervisory bodies or partners

Risk of non-compliance

No audited evidence in the event of an incident
Reduced reassurance in tender processes
Difficulty demonstrating risk management
Certification ISO 9001

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

Structured and audited service processes
Consistent service quality
Measurable continuous improvement

Who is affected?

Organizations requiring a consistently reliable service provider
Organizations requiring responsive and organized support
Management teams evaluating their suppliers

Risk of non-compliance

No formal guarantee of service quality
Unstructured support in the event of an issue
A supplier relationship without measurable commitments
Conformité à la directive européenne NIS 2

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

Enhanced cybersecurity standards for critical sectors
Risk and incident management obligations
Accountability for executives

Who is affected?

Essential and important entities in the healthcare sector
Organizations falling under the scope of national transposition
Their service providers, including cloud hosting providers

Risk of non-compliance

Regulatory audits and injunctions
Financial penalties
Increased exposure to incidents
1. Healthcare data security
  • Data encryption and antivirus protection
  • Intrusion and leak protection
2. Regulatory compliance
  • HDS certification for all activities
  • GDPR and NIS2 compliance
3. Data sovereignty
  • Hosting exclusively in France
  • Protection against extraterritorial legislation
4. Access management and traceability
  • Granular access rights by department or profile
  • Full activity history
5. Secure collaboration
  • Sharing between healthcare professionals
  • Co-editing and teamwork

The pillars of Voltn

Voltn offers the most certified file management solutions on the market, for uncompromising health data security in a sovereign, end-to-end controlled trusted cloud.You take care of your patients, we take care of their data.

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

Send patient files, results, and medical imaging via secure links, with no limits on size or format. Everything is encrypted from end to end.

Password or SMS code protection

Add authentication to every sensitive share and set an expiration date. Lab results can only be viewed by the intended recipient.

Secure upload link

Patients and partners can upload prescriptions, certificates, and administrative documents to a dedicated space without needing to create an account. Every file is scanned for viruses and automatically filed in the right place.

Full traceability of exchanges

Activity logs, unique links, and timestamps: you know exactly who viewed or downloaded which document. Medical confidentiality now has an audit trail.

Custom portal reflecting your institution's branding

Your patients and partners exchange documents in a space branded with your colors, providing a recognizable and reassuring experience. Trust is built here, too.
Discover Voltn Share

The enterprise file platform

Access management by department or profile

Assign precise permissions to every doctor, caregiver, or administrative staff member with 7 levels of access rights. Everyone accesses only their own scope, and nothing more.

Real-time collaboration

Reports, protocols, schedules: co-edit your documents with others directly in Word, Excel, and PowerPoint formats. One single version, always up to date.

Mobile app, even offline

Whether on home visits or moving between departments, files follow your teams on mobile. Work synchronizes as soon as the network is back.

eIDAS-compliant electronic signature

Send and receive eIDAS-compliant signature requests with Voltn Sign without ever leaving the platform. Signing a document has never been easier.

Version history and anti-deletion trash bin

Every document retains its full version history, and deleted files remain recoverable for a duration of your choosing. No file will ever disappear by mistake.
Discover Voltn Workspace

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.

Scenario
Sharing patient files between departments and with partners
Solution
Centralized secure space with department-specific permissions and audit trails
Benefit
Time savings +
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.

Scenario
Sharing confidential data between community healthcare professionals
Solution
HDS-certified shared spaces + offline mobile app
Benefit
 seamless coordinated care + medical confidentiality preserved

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.

Scenario
Collecting patient documents and sharing large-scale results
Solution
Secure upload link + protected sharing with no size limits
Benefit
document workflows accelerated + confidentiality guaranteed

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.

Scenario
Processing of medical documents subject to HDS requirements
Solution
HDS-certified environment with partitioned spaces and traceability
Benefit
Compliance guaranteed + member trust preserved

What about other sectors?

From healthcare to logistics, every industry has its own security, privacy, and compliance rules. Voltn adapts to them, not the other way around.
1

Public institutions

Protecting citizen data is a duty. Voltn is the solution for public institutions.
2

Non-profits and NGOs

We are committed to supporting you by offering solutions tailored to your needs and budget.
3

Transport and logistics

High-performance mobile solutions, from the warehouse to the point of delivery.

96% of our clients recommend us

Frédéric Lamagdelaine

IT Project Manager at Samu Social de Paris

With Voltn, we share and collaborate easily in a fully secure, HDS-compliant environment, effortlessly adapting access rights, confidentiality, and traceability requirements to the specific needs of each of our missions.

Use cases

Solutions for every sector

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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.

You could keep all your documents on a floppy disk.
Vintage office chair with a pile of folders and a beige corded telephone, handset off the hook on red carpet.

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