Information Security Management System to Protect Information Confidentiality, Integrity, and Availability

Bineesh Mathew | June 18, 2021

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In this modern world of technology, ensuring information security is very important for the smooth running of any organization. Unfortunately, there are many information/cyber security threats, including malware, ransom ware, emotet, denial of service, man in the middle, phishing, SQL injection, and password attacks. Whatever your business is, no doubt, it can collapse your business and your dreams. However, the severity of its after-effects depends upon the type of business you do.

As information security threat has become a hurdle for all organizations, companies must implement an effective information security management system. In 2019 alone, the total number of breaches was 1473. It is increasing every year as businesses are doing digital transformation widely. Phishing is the most damaging and widespread threat to businesses, accounting for 90% of organizations' breaches.

This article lets you understand what ISMS is and how it can be effectively implemented in your organization.

Information Security Management System (ISMS)

According to ISO/IEC 27001, Information Security Management System (ISMS) refers to various procedures, policies, and guidelines to manage and protect organizations' information assets. In addition, the system also comprises various other associated resources and activities frameworks for information security management.

Organizations are jointly responsible for maintaining information security. People responsible for security in an organization ensure that all employees diligently meet all policies, guidelines, and other objectives regarding protecting information. Also, they safeguard all assets of the organization from external cyber threats and attacks.

The goal and objective of the system are to protect the confidentiality, integrity, and availability of assets from all threats and vulnerabilities. Effectively implementing an information security management system in your organization avoids the possibility of leaking personal, sensitive, and confidential data and getting exposed to harmful hands. The step-by-step implementation of ISMS includes the process of designing, implementing, managing, and maintaining it.

Implementing ISMS in Organizations

The standard for establishing and maintaining an information security management system in any organization is ISO 27001. However, as the standard has broad building blocks in designing and implementing ISMS, organizations can shape it according to their requirements.

Effectively implementing ISMS in organizations in compliance with ISO 27001 lets you enjoy significant benefits. However, an in-depth implementation and training process has to be ensured to realize these benefits comprehensively. Therefore, let us look into how an information security management system can be successfully implemented in your organization.


The first step in implementing ISMS is identifying the assets vulnerable to security threats and determining their value to your organization. In this process, devices and various types of data are listed according to their relative importance. Assets can be divided across three dimensions: confidentiality, integrity, and availability. It will allow you to give a rating to your assets according to their sensitivity and importance to the company.

  • Confidentiality is ensuring that the assets are accessed by authorized persons only.
  • Integrity means ensuring that the data and information to be secured are complete, correct, and safeguarded thoroughly.
  • Availability is ensuring that the protected information is available to the authorized persons when they require it.

Policies and Procedures and Approval from the Management

In this step, you will have to create policies and procedures based on the insights you got from the first step. It is said to be the riskiest step as it will enforce new behaviors in your organization. Rules and regulations will be set for all the employees in this step. Therefore, it becomes the riskiest step as people always resist accepting and following the changes. You also should get the management approval once the policies are written.

Risk Assessment

Risk assessment is an integral part of implementing an Information Security Management System. Risk assessment allows you to provide values to your assets and realize which asset needs utmost care. For example, a competitor, an insider, or a cybercriminal group may want to compromise your information and steal your information. With a simple brainstorming session, you can realize and identify various potential sources of risk and potential damage. A well-documented risk assessment plan and methodology will make the process error-free.

Risk Treatment

In this step, you will have to implement the risk assessment plan you defined in the previous step. It is a time-consuming process, especially for larger organizations. This process is to get a clear picture of both internal and external dangers that can happen to the information in your organization.

The process of risk treatment also will help you to reduce the risks, which are not acceptable. Additionally, you may have to create a detailed report comprising all the steps you took during the risk assessment and treatment phase in this step.


If you want effectively implement all the policies and procedures, providing training to employees is necessary. To make people perform as expected, educating your personnel about the necessity of implementing an information security management system is crucial. The most common reason for the failure of security management failure is the absence of this program.

Implementing ISMS

Once policies and procedures are written, and necessary training is provided to all employees, you can get into the actual process of implementing it in your organization. Then, as all the employees follow the new set of rules and regulations, you can start evaluating the system's effectiveness.

Monitoring and Auditing

Here you check whether the objectives set were being met or not. If not, you may take corrective and preventive actions. In addition, as part of auditing, you also ensure all employees are following what was being implemented in the information security management system. This is because people may likely follow wrong things without the awareness that they are doing something wrong. In that case, disciplinary actions have to be taken to prevent and correct it. Here you make sure and ensure all the controls are working as you expected.

Management Review

The final step in the process of implementing an information security management system is management review. In this step, you work with the senior management to understand your ISMS is achieving the goals. You also utilize this step to set future goals in terms of your security strategy.

Once the implementation and review are completed successfully, the organization can apply for certification to ensure the best information security management practices.

Summing UP

Organizations benefit from implementing and certifying their information security management system. The organization has defined and implemented a management system by building awareness, training employees, applying the proper security measures, and executing a systematic approach to information security management. Thus implementation has the following benefits:

  • Minimized risk of information loss.
  • The increased trust of customers in the company as the company is ISO/IEC 27001 certified.
  • Developed competencies and awareness about information security among all employees
  • The organization meets various regulatory requirements.

Frequently Asked questions

What are the three principles of information security?

Confidentiality, integrity, and availability (CIA) are the three main principles and objectives of information security. These are the fundamental principles and the heart of information security.

How does information security management work?

Information security management works on five pillars. The five pillars are assessment, detection, reaction, documentation, and prevention. Effective implementation of these pillars determines the success of the information security management in your company.

What are the challenges in information security management?

Challenges in information security management in your company can be the following:

  • You can’t identify your most critical data
  • Policies aren’t in place for protecting sensitive information.
  • Employees aren’t trained in company policies.
  • Technology isn’t implemented for your policies.
  • You can’t limit vendor access to sensitive information.


The Cyber Advisor

The primary focus of our business is to create security awareness. Whether you are using a laptop, desktop, tablet, smartphone and yes even those smart watches and wearable fitness trackers, you could very well be a victim of the next cyber attack. Due to the increase of cyber attacks, viruses, malware and ransomware threats that have been making the news, you should really get a better understanding of how you can protect yourself against these threats.


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