ISO 27001 Audit
Achieve and maintain ISO 27001 compliance with a comprehensive internal audit by Nestor Security.
Achieve and maintain ISO 27001 compliance with a comprehensive internal audit by Nestor Security.

Is your organization due for an audit for the ISO 27001 standard? Engage an expert auditor from Nestor Security, and make sure you meet the expectations of your customers and stakeholders.
ISO 27001 helps companies achieve resilience through an Information Security Management System (ISMS). Implementing the ISO 27001 standard assures your customers and stakeholders that you are proactively committed to securing their data.
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Our ISO 27001 services are provided by accredited lead auditors with extensive experience in various industries.

100% of our customers managed to pass the external audit for ISO 27001 certification under our guidance.

Our specialists adjust to your schedule, resulting in the least amount of disruption to your operations.
Our specialists are highly experienced, ISO 27001-certified auditors and qualified to conduct internal audits according to the requirements that your external agencies also look for. During the internal audit, our ISO auditor assesses your ISMS and Annex A controls through both interviews and review of your documentation.
This includes asking for evidence that demonstrates your compliance with all requirements. This audit will identify bottlenecks, opportunities for improvement and recommendations for follow-up actions.


In addition to the audits conducted by your external certification body, ISO 27001 requires you to conduct an internal audit at least once a year. In practice, this can be a stumbling block: employees are not always on the same page, and usually lack the necessary knowledge and experience to conduct the audit properly. We provide you with:
Highly experienced, ISO 27001-accredited auditors
A comprehensive audit plan that will make your audit run smoothly
Flexible audit plans that completely fit your own schedule
Detailed reporting with insight into bottlenecks and opportunities for improvement
At Nestor Security, we understand that achieving ISO 27001 certification is a complex challenge, but we also believe that it is possible to simplify the process significantly. Based on this vision, we make the implementation process understandable and offer practical support from start to finish.
What sets us apart is a unique combination of substantive depth and a no-nonsense approach. We don't offer generic advice, but guidance that truly fits your unique circumstances, processes and goals. We make sure everything works well, and that your efforts are truly demonstrable.
With Nestor Security, you not only gain knowledge, but also control of the process.


Together with you, we determine the scope of the audit

We prepare a comprehensive audit plan for approval

The plan includes a detailed audit schedule

Our auditor performs the audit at your location

The audit can also be conducted externally

After the audit, we deliver a targeted report

The audit report identifies bottlenecks for you

The auditor advises you on action items for compliance
What is Annex A?
Annex A is a collection of security measures that your organization can use to address identified information security risks. If you ISO 27001-certified are, these measures will sound familiar, as Annex A forms the basis of your information security framework. The internal audit identifies the relevant Annex A measures and verifies that they have been effectively implemented.
What is an ISO 27001 audit?
How long does an internal audit take?
This varies based on several factors, including:
The scope of your ISMS
The size of your organization
The locations of your offices, warehouses, etc.
Audit schedules - some companies audit all components and Annex A control measures in one audit, while others choose to split this up and perform parts during the audit cycle.
If you are interested in performing your internal audits with us, we will first discuss your needs and circumstances in detail. This will give us a good picture of your environment and allow us to provide an accurate, fixed price quote.
Once the scope of work is established and agreed upon, we deliver the entire audit process, regardless of the time required to complete the audit.
What is covered by our internal audit?
Our ISO 27001 audit report includes:
The scope and type of audit
Components of the management system and related documentation
The Annex A management measures
Details of any bottlenecks
Improvement Opportunities
Audit notes and findings
Who should be involved in an internal audit?
To assess the level of ISMS among employees, the auditor can randomly select an employee to examine what they know.
Key people involved in audits include IT staff, HR, senior management, the Information Security Manager (if any) and risk owners. Others may also be involved, but the auditor will discuss this with you during the initial audit meetings and advise who to speak with.
What is the difference between an internal and an external ISO audit?
Your certifying body conducts audits to achieve ISO 27001 certification and then once every three years to renew certification. These are external audits conducted by the external certifying body. In addition, your organization is required to conduct internal audits at least once every 12 months to remain in compliance with ISO 27001 requirements.
Many organizations outsource internal audits because of a lack of internal resources and to avoid conflicts of interest when an organization would need to audit itself. Both internal and external audits are conducted in a similar manner and focus on demonstrating compliance with the components and relevant Annex A measures.

"Nestor Security has provided us with the internal audits of ISO 27001 and ISO 27701. They really hit the right chord for us with a good combination of quality and practicability. They think pragmatically, well with our needs and the audits were well taken care of."
- Wouter Buzing, CISO Effectory
We are happy to help you with ISO 27001. Leave a message to the right, and one of our consultants will get back to you within one business day!