ISO certification for cloud providers: How to assess vendor security
You have probably come across claims time and again that a software provider is “secure”, “protected” or offers a service “to the highest standards”. There is certainly no shortage of such promises among cloud and SaaS providers. What is more difficult for companies is verifying how reliable these claims actually are. Especially when confidential documents, personal data or business-critical information are being processed, relying on a marketing promise is simply not enough.
This article is therefore intended to help you understand how to assess the reliability of such security claims.
netfiles recertified to ISO/IEC 27001:2022
Independent certifications are an important point of reference here. The information security management system at netfiles, for example, has just been recertified to ISO/IEC 27001:2022 by TÜV SÜD . This internationally recognized standard is one of the most important standards for information security management systems. But what does such a certificate actually tell you about a cloud provider – and what should you look for when assessing one?
What ISO 27001 means for a cloud provider
ISO/IEC 27001 defines requirements for an information security management system (ISMS). Put simply, an audit examines how a company systematically identifies, assesses, addresses and continuously monitors information security risks. The standard does not treat information security as a purely technical issue; it also covers processes, responsibilities and organizational measures.
This is an important distinction: ISO 27001 certification does not certify that a particular piece of software is immune to attack. Instead, the ISMS is certified within a clearly defined scope.
At netfiles, for example, this scope covers the “marketing, operation and support of the netfiles application for virtual project and data rooms.” This allows customers to see exactly which parts of the company and its services are covered by the certification.
Why certification needs to be renewed regularly
Information security is not a state that is achieved once and then remains unchanged. Technologies evolve, new attack methods emerge, processes develop further and security requirements are updated. A certificate therefore needs to remain current.
This is precisely why ISO 27001 certification is not a one-time audit and why, once issued, the certificate is valid for three years. Annual surveillance audits take place during the first two years, followed by recertification before the end of the certification cycle. This involves another review to determine whether the ISMS continues to meet the requirements of the standard and is being operated effectively.
The current recertification of netfiles to ISO/IEC 27001:2022 therefore confirms that the ISMS continues to comply with the requirements of the current standard and is subject to regular review.
What an ISO 27001 certificate tells you – and what it does not
For companies, a valid ISO 27001 certificate is a reliable indication that a provider addresses its information security risks in accordance with transparent international requirements and allows this approach to be independently reviewed.
Certification does not, however, guarantee that a security incident can never occur. Nor does it automatically answer every question about the specific technical design of a cloud service or the data protection framework under which it operates. This distinction matters: the strength of ISO certification lies in the systematic and independently verified approach to information security, rather than in any promise of absolute security.
How companies can identify a meaningful certification
In practice, this means: taking a close look at a provider’s ISO certification: Is the certificate current? What is its scope? Which organization was certified – and does the scope cover the services and processes relevant to the cloud service you intend to use?
The last point in particular can make a significant difference. For example, certification of the data center used by a provider is not automatically equivalent to certification of the SaaS provider itself or of its ISMS.
A certificate is important – but it is not the whole picture
Always ask what other independent security evidence the provider can supply. ISO 27001 is an important assessment criterion, but it is not the only one. Particularly with cloud services, different audit and assessment procedures complement one another and examine different aspects of a provider’s security. ISO certification assesses a management system against an international standard. Attestations such as BSI C5 and SOC 2, in turn, examine defined security and control requirements. Penetration tests approach security from another angle by investigating potential technical attack vectors and vulnerabilities.
netfiles combines these different levels of assessment. In addition to its renewed certification to ISO/IEC 27001:2022, netfiles is certified to ISO 22301:2019 for business continuity management and holds BSI C5 (Type 2) and SOC 2 (Type II) attestations. netfiles also has its systems regularly assessed through penetration tests conducted by independent security experts.
You can find further information about netfiles certifications and attestations in our overview of independently verified security.
For customers, this creates a more comprehensive picture than a single seal or certificate can provide: security processes, control mechanisms and technical systems are reviewed from different perspectives. Other factors that may be relevant to a company’s own risk and compliance assessment include data protection, data location, access controls and the traceability of activities.
Conclusion: Look beyond the logo to what the certification actually says
When assessing a cloud provider, do not focus solely on certification logos. They provide an initial indication of the standards and audit procedures a provider is subject to. For a meaningful assessment, however, it is worth looking at the details – particularly the currency and scope of the certification and any additional independent security evidence.
A current ISO certification that is relevant to the service in question, together with further certifications, attestations and independent security assessments, provides companies with a transparent basis for evaluating security claims when selecting a cloud or virtual data room provider.
Against this background, the renewed ISO/IEC 27001:2022 certification of netfiles is above all further independent evidence that information security at netfiles is treated as an ongoing, verifiable process rather than a one-off measure – and that the information security management system continues to be assessed against an internationally recognized standard.
Assess netfiles security for yourself
Would you like to learn more about what our security and compliance credentials mean for your specific requirements? Our team will be happy to answer your questions personally. Alternatively, you can try netfiles free of charge and with no obligation for 14 days.