Comment partager des documents médicaux entre professionnels de santé ?

Par un lien sécurisé Voltn Share : chiffré, protégé par mot de passe ou code SMS, avec date d'expiration et traçabilité de chaque consultation. Les fichiers volumineux comme l'imagerie transitent sans limite de taille.

Un établissement de santé doit-il héberger ses données chez un hébergeur certifié HDS ?

Oui. Les données de santé recueillies lors d'activités de prévention, de diagnostic, de soins ou de suivi médico-social doivent être hébergées chez un hébergeur certifié HDS, conformément à l'article L1111-8 du Code de la santé publique et au décret n° 2018-137. Voltn est certifié HDS sur l'ensemble des six activités du référentiel.

Quelle différence entre HDS et ISO 27001 ?

ISO 27001 est une norme internationale de management de la sécurité de l'information : elle constitue le socle de la certification HDS, dont elle représente l'essentiel des critères. La certification HDS y ajoute des exigences propres à l'hébergement des données de santé en France. Voltn cumule les deux.

Comment protéger les données patients contre les cyberattaques ?

Par le chiffrement, l'analyse antivirus et la détection des ransomwares en temps réel, la double authentification, la gestion fine des droits d'accès et la traçabilité complète des actions. Chaque fichier est en outre répliqué sur trois supports répartis dans deux data centers distincts.

Où sont hébergées les données de santé ?

Exclusivement en France, dans des data centers conformes aux normes Tier 3+ et Tier 4. Aucun transfert de données de santé n'est réalisé vers un pays tiers à l'Espace économique européen, hors de portée du Cloud Act.

Secure your health data with HDS-certified hosting.

Centralize, share, and protect your health data in an environment that complies with HDS, GDPR, and ISO requirements, hosted in France.

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HDS certified (all 6 levels)

ISO 27001 & ISO 9001 certifications

Advanced protection (encryption, antivirus, traceability)

100% French hosting

Healthcare facilities are facing critical challenges.

Patient records, test results, imaging, and prescriptions: health data is among the most sensitive information there is. Voltn (formerly NetExplorer) hosts it in a sovereign, HDS-certified cloud designed to keep it secure.

Patient data protection

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Medical records, results, and histories: nothing is more precious than health. 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 doesn't end at the office door: it follows every file, every share, and every consultation. Privacy must be guaranteed from end to end.

Complex exchange processes between stakeholders

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Laboratories, medical facilities, radiology centers, and pharmacies all need to share confidential information quickly and efficiently. Without a common framework, security for every exchange is left to chance.

Increase in cyberattacks

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In 2025, more than 700 healthcare organizations reported a cybersecurity incident. To address this, institutions are implementing strict governance and requiring expert cloud providers.

HDS

The Health Data Hosting certification confirms that a host's procedures comply with the requirements for hosting personal health data. Voltn is HDS certified for all six activities in the framework, from the data center to the software.
ta center to the software.

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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, diagnostic, treatment, or medico-social monitoring activities

Hospitals, clinics, laboratories, and medical practices

Mutual insurance companies, health insurers, and e-health software providers

Risks of non-compliance

Inability to legally host health data

Regulatory penalties

Leak of highly sensitive data

GDPR

In accordance with the 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 the individuals concerned

Who is affected?

Public and private healthcare facilities

Laboratories, imaging centers, and pharmacies

Health insurance providers and mutuals

Risks of non-compliance

CNIL sanctions

Liability of the institution

Loss of patient trust

ISO 27001 standard

ISO 27001 certification confirms an audited and proven information security management system. It forms the foundation of HDS certification, accounting for the majority of its criteria. At Voltn, it covers the entire platform.

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It guarantees

Information security certified by an independent audit

Cyber risk management

Continuous improvement of security processes

Who is affected?

Institutions subject to an IT security policy

Organizations handling sensitive health data

Entities audited by their regulatory bodies or partners

Risk of non-compliance

No audited evidence in the event of an incident

Reduced reassurance during tender processes

Difficulty demonstrating risk management

ISO 9001

ISO 9001 certification confirms Voltn's rigorous organization in meeting client needs. It demonstrates a commitment to service quality and continuous improvement.

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It guarantees

Structured and audited service processes

Consistent service quality

Measured continuous improvement

Who is affected?

Institutions expecting a consistently reliable provider

Organizations requiring responsive and organized support

Management teams evaluating their vendors

Risk of non-compliance

No formal guarantee of service quality

Unstructured support when issues arise

A vendor relationship without measurable commitments

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 for critical sectors

Risk and incident management obligations

Increased accountability for executives

Who is affected?

Essential and important entities in the healthcare sector

Institutions 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. Health data security

Data encryption and antivirus protection
Protection against intrusions and leaks

2. Regulatory compliance

HDS certification across all operations
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
Complete action history

5. Secure collaboration

Sharing between healthcare professionals
Co-authoring 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.

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Solutions tailored to your needs

Voltn Share secures your external medical document exchanges. Voltn Workspace centralizes storage and collaboration within your facility.

Voltn Share

Voltn Workspace

External file sharing

Encrypted exchanges with your external partners

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

Password or SMS code protection

Add authentication to every sensitive share and set an expiration date. Lab results can only be accessed 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 by antivirus and automatically filed in the right place.

Full traceability of all exchanges

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

Custom portal branded for your institution

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

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The enterprise file platform

Rights management by department or profile

Assign precise permissions to each doctor, caregiver, or administrative staff member with 7 levels of access rights. Everyone accesses their own scope, and only their own.

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 between shifts, 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 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 the duration of your choice. No file will ever disappear by mistake.

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Practical use cases in the healthcare sector

Hospital & clinic

Thousands of employees, dozens of departments, and files circulating between caregivers, administrative staff, and external partners: hospitals thrive on massive, sensitive document exchanges. Voltn organizes it all: a centralized secure space, department-specific permissions, full traceability, and compartmentalization that protects every perimeter.

Current state

Partage de dossiers patients entre services et avec les partenaires

Solution

Centralized secure space with department-level permissions and audit trails

Benefit

time savings +
HDS and GDPR compliance

Medical practice & CPTS

Community medicine, coordinated care, and territorial professional health communities: professionals share confidential data across multiple structures, often using makeshift tools. Voltn provides the framework: files remain stored in France, protected from extraterritorial laws, each professional accesses their own scope, and the mobile app supports home visits, even offline.

Current state

Confidential data sharing between community healthcare professionals

Solution

HDS-certified shared spaces + offline mobile app

Benefit

seamless coordinated care + medical confidentiality preserved

Laboratory & imaging center

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 and full traceability for every view.

Current state

Patient document collection and large-file result sharing

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 requests: supplementary health insurance providers handle health data as defined by the Public Health Code, which carries mandatory HDS compliance. Voltn provides them with a certified environment: document collection via upload links, service-specific partitioned spaces, and traceability that logs every instance of access to medical records.

Current state

Processing of medical documents subject to HDS requirements

Solution

HDS-certified environment with partitioned spaces and traceability

Benefit

Compliance guaranteed + member trust preserved

All use cases

What about other sectors?

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

Public institutions

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

See use cases in the Public Sector

Non-profits and NGOs

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

See use cases for non-profits

Transport and logistics

Mobile and high-performance solutions, from the warehouse to the point of delivery.

See use cases in logistics

Discover all sectors

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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, adapting the access rights, confidentiality and audit trail requirements of each of our assignments to their specific needs.”

Use cases

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 for all actions. Furthermore, every file is replicated across three storage media located 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.

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