Cybercrime, data breaches, legal requirements—the demands on information security are increasing. As a result, more and more companies are adopting an ISMS in accordance with ISO/IEC 27001. But how do you get started on this path in a professional and structured way? And what really matters at the beginning?
In this article, we’ll walk you through the key steps for implementing an information security management system—in a clear, practical way that focuses on the essentials.
Why ISO 27001?
ISO/IEC 27001 is the globally recognized standard for information security. Companies that align themselves with this standard not only demonstrate to customers and partners that they take responsibility—they also benefit internally from clear processes, reduced risks, and greater transparency.
An ISMS helps you systematically identify information assets, assess risks, and implement appropriate protective measures. This not only strengthens IT security but also builds trust in your company.
Next Step: Conduct a Gap Analysis
Before you begin the actual planning process, it is advisable to conduct a gap analysis. This involves systematically comparing the current state of information security within the company with the requirements of ISO/IEC 27001.
The purpose of this analysis is to assess existing measures, processes, and documentation and to identify potential gaps. The gap analysis provides clarity on the current level of maturity and serves as a solid foundation for setting realistic goals and priorities.
Step 1: Define Responsibilities
The first step is to clearly define who will manage and be responsible for the implementation of the ISMS. This could be an information security officer—or an interdisciplinary project team.
It is important to note that implementing an ISMS is not an IT project, but rather a company-wide effort that also involves management, line departments, and, where applicable, external partners.
Step 2: Define Objectives and Scope
What exactly should the ISMS cover? Just IT? Or also business units, service providers, and mobile devices?
In this step, you define what is known as the “scope”— that is, the organizational and technical framework to which the ISMS should apply. At the same time, you formulate specific security objectives that will guide all measures.
Step 3: Identify and Assess Risks
A key element of ISO 27001 is risk management. This involves identifying vulnerabilities, threats, and their impact on information security—and determining appropriate measures.
Typical risks can include, for example, a lack of access controls, insecure interfaces, or human error. The goal is to conduct a structured assessment and prioritization in order to make the right decisions.
Step 4: Plan and Document Actions
Based on the risk assessment, you define specific security measures—both technical and organizational. These are documented in what is known as the Statement of Applicability (SoA).
Examples: Employee training, data encryption, contingency plans, or the implementation of new access control processes.
Step 5: Implement and Improve the ISMS
An ISMS is not a one-time project—it is an ongoing process. ISO 27001 requires regular audits, management reviews, and improvements. This is because information security is never “complete”; it must grow along with the organization.
Additional Information
Would you like to know how an ISMS differs from traditional IT security?
Then read our article:
ISMS vs. IT Security: What’s the Difference?
Training Tip for Getting Started
SERVIEW’s ISO/IEC 27001 Foundation training course provides you with in-depth knowledge of the standard, its requirements, and how to implement it in your organization. It is ideal for anyone who is responsible for information security or who would like to assist with its implementation.
Get started now: ISO/IEC 27001 Foundation Training at SERVIEW
