Why security-conscious organizations choose Nextcloud
Most cloud platforms leave critical decisions in someone else’s hands: where your data lives, who can access it, and how it’s protected. Nextcloud was built for organizations that need to operate entirely autonomously and for whom a breach isn’t an option.
Self-hosted data residency
You can run Nextcloud entirely on-premises or use a certified provider. This gives you full control over where your data is stored and which legal frameworks apply.
Code auditability
Nextcloud’s code is publicly available, which means every change can be attributed, builds can be reproduced, and the dependency tree can be verified. There are no black boxes preventing auditors or independent researchers from inspecting the source code.
End-to-end encryption
Nextcloud supports server-side and end-to-end encryption. If required, customer-managed encryption keys ensure the server never has access to unencrypted files or keys, giving you full control over who can decrypt your data.
Trusted by thousands of organizations
Nextcloud is used by tens of millions of users at thousands of organizations across all industries, including aerospace, financial services, government, and technology.
Data residency, on your terms
You can run Nextcloud on-premises to ensure full control over your data. For maximum security, you can also deploy it in an air-gapped environment.
Secure collaboration tools, sovereign by design
Nextcloud provides a digital workspace for organizations that operate under high threat levels and cannot afford to compromise on security. It integrates powerful collaboration software into one unified, modular platform that keeps sensitive data safe from unauthorized access.
Nextcloud Files combines granular, group-based permissions with classification-driven access rules for file storage, syncing, and sharing, giving organizations full control over who can see or touch each file without giving up seamless collaboration.
Nextcloud Talk keeps calls and chats on your own infrastructure, offering peer-to-peer end-to-end encrypted calls so sensitive conversations never depend on a third-party provider.
Nextcloud Assistant can be run with local, self-hosted large language models instead of sending data to third-party AI providers, letting organizations use AI-powered productivity features without sensitive content leaving their infrastructure.
With Nextcloud Flow, organizations can automate approvals, notifications, and access restrictions on workflows that stay entirely within their own self-hosted environment.
Nextcloud Enterprise for critical infrastructure
With Nextcloud Enterprise, you get access to a scalable, security-first collaboration solution with long-term support, guaranteed response times, and rapid security updates.
Contact us to discover how Nextcloud can help you regain control of your mission-critical data.
Security features for ensuring continuity of operations
Nextcloud’s architecture follows zero-trust principles through continuous request verification, brute-force protection, MFA, granular per-file and per-app permissions, and optional zero-knowledge encryption. Every access is checked, not assumed.
Nextcloud supports transport encryption (TLS/HTTPS), server-side encryption (including for external object storage like S3), and end-to-end encryption (E2EE).
Server-side encryption can integrate with external key servers or hardware security modules. Configuring recovery keys ensures encrypted files remain accessible even if a user loses their password.
For high-security use, E2EE removes the server entirely from the trust chain. Zero-knowledge server design and cryptographic identity protection ensure security is never compromised by a browser encrypting or decrypting files with code coming from the server.
Multiple second factors (such as TOTP, hardware keys/U2F, and SMS), enforceable 2FA policies, and session/device management ensure only verified users reach the system. Nextcloud also integrates with LDAP/Active Directory for centralized identity management and consistent authentication policies across systems.
Administrators can assign sharing and access permissions by group to restrict sensitive folders to specific teams or roles. Automatic classification tags files based on their properties and metadata for automated access restrictions and policy-driven workflows.
Nextcloud includes built-in hardenings such as brute-force detection, content-security-policy enforcement, and rate limiting. Security teams can fold Nextcloud into existing SOC/SIEM workflows, thanks to a compliance-ready activity and audit log as well as monitoring hooks compatible with tools like Splunk, Nagios, and OpenNMS.
Administrator can remotely delete company data from a lost or stolen device, including personal devices in BYOD situations. For trustless interactions, setting up virtual data rooms enforces a strict security boundary between parties without impeding collaboration.
Nextcloud Enterprise comes with built-in functionalities for tighter control over access to sensitive information, data lifecycle management and compliance processes. These provide an overview of the compliance setup in an organization as well as options for sensitivity labels, legal hold periods, and tracking of due compliance tasks.
Full interoperability with your infrastructure
To prevent vendor lock-in and ensure smooth integration with your existing systems, Nextcloud uses open standards and portable data formats. You can integrate it with the identity, security, storage, and productivity systems you already trust using APIs and proven integrations.
Nextcloud Files
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Euro-Office
Collabora Online
Thinkfree OfficeNextcloud Assistant
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Nextcloud Collectives
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Nextcloud Deck
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Mail server
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Identity & Access management
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Features
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Industry-recognized security, independently validated
Nextcloud Enterprise is designed to meet the stringent security and compliance requirements. It can be deployed in environments certified to ISO 27001-based standards. This provides a strong foundation for organizations working toward requirements such as GDPR, HIPAA, and FDA 21 CFR Part 11.
EU Cybersecurity Act
Nextcloud Enterprise focuses on security, transparency, data sovereignty, and customer control, providing a strong foundation for organizations preparing for the EU Cybersecurity Act and the emerging European Cybersecurity Certification Scheme for Cloud Services (EUCS).
ANSSI CSPN (EN 17640)
Nextcloud Files has been CSPN-certified by the French cybersecurity authority ANSSI. CSPN is a standard reference point in French public tenders and maps to the European standard EN 17640.
Case studies
Thierry Markwitz, Deputy Director of Infrastructures at Ministère de l’Intérieur
The French government cares deeply about the safety of the data of their citizens and employees. With the on-premises content collaboration platform Nextcloud we have opted for a secure, easy to use solution from the leading European vendor.
German Federal
Government, ITZBund
Nextcloud provides users with a modern, easy-to-use and productivity-oriented solution that enables efficient online and mobile collaboration and communication. ITZBund now provides an on-premises open source solution from a German provider to keep control over their own data.
Contact us
Do you have questions about using Nextcloud for collaboration in high-security environments?
We’ll help you plan deployment on your infrastructure.
