The Key to Cyber Resilience: Identifying Critical Business Functions for Success

In today's digital landscape, businesses face an ever-increasing threat from cyberattacks. To effectively protect themselves, organizations must bolster their cyber resilience. One key strategy is identifying critical business functions and their associated IT assets. By understanding which aspects of your operations are most vital, you can prioritize your resources and efforts to strengthen your security measures.

Understanding Cyber Resilience

Cyber resilience refers to an organization's ability to withstand and recover from cyberattacks. It involves not only preventing attacks but also minimizing the impact and recovering quickly when an attack does occur. Cyber resilience requires a proactive and holistic approach encompassing people, processes, and technology. It is not just about having solid firewalls and antivirus software but a comprehensive strategy that considers the entire business ecosystem.

Importance of Identifying Critical Business Functions

Identifying critical business functions is crucial for building cyber resilience. These functions are the core activities that keep an organization running smoothly and generate revenue. Understanding which functions are critical allows you to focus your resources and efforts on protecting these areas. By prioritizing security measures, your organization can ensure its most vital operations are well-defended against cyber threats.

Identifying critical business functions also helps your organization allocate resources effectively. Cybersecurity measures can be costly, and it is not feasible or necessary to protect every aspect of a business equally. By identifying critical functions, your organization can invest its resources where they matter the most, maximizing your cybersecurity budget while minimizing potential risks.

Additionally, identifying critical business functions allows your organization to develop contingency plans in the event of a cyberattack. Businesses can create backup systems and alternative processes to ensure minimal disruption by understanding the dependencies and interconnections between different functions. This proactive approach helps your organization recover quickly and limit the impact of cyber incidents.

Identifying Critical Business Functions

The process of identifying critical business functions involves a thorough examination of an organization's operations and dependencies. It requires collaboration between different departments and stakeholders to understand the business's structure and processes comprehensively.

Create a List

The first step is to create a list of all the functions and processes within the organization. This includes internal and external activities that contribute to the overall functioning of the business. It is essential to consider all aspects, including customer-facing operations, supply chain management, financial processes, and communication channels.

Prioritize Functions and Processes

Once the list is complete, the next step is prioritizing the functions based on their criticality. This can be done through a risk assessment process that evaluates the potential impact of a cyberattack on each function. Factors such as financial loss, reputational damage, regulatory compliance, and customer trust should be considered when determining a function's criticality.

Create an Asset Inventory

Every critical business function relies on a set of IT assets to provide that service to the business, including endpoints, servers, cloud software, and more. Knowing which assets are necessary to provide critical functions is important when creating a cyber resilience plan.

Traditionally, companies would compile an asset inventory by interviewing key employees and asking them which IT assets they use. These individual lists would then be compiled into a master inventory containing all critical assets. Or, a company may rely on a configuration management database (CMDB) as its source of truth. However, Redjack has found that companies typically only have visibility into around 30% of their actual IT infrastructure. Whether due to shadow IT, poor legacy recordkeeping, or just plain forgetfulness, most companies need to learn the true extent of their systems.

An alternative way to compile an asset inventory is to place sensors in your network that capture communications data and use it to create a map of your corporate infrastructure. This gives you complete visibility into the true extent of your IT asset infrastructure, including which assets are interrelated or interdependent.

Document Results

The final step is to document and communicate the identified critical business functions and their associated IT assets throughout your organization. This ensures that all stakeholders know the importance of these functions and can align their efforts accordingly. It also helps in developing incident response plans and allocating resources effectively.

Assessing the Impact of Cyberattacks on Critical Business Functions

Understanding the potential impact of cyberattacks on critical business functions is essential for you to develop effective cyber resilience measures. This assessment helps you prioritize your security efforts and allocate resources accordingly.

One approach to assessing the impact is through a business impact analysis (BIA). A BIA evaluates a cyberattack's potential financial, operational, and reputational consequences on critical functions. It helps your organization quantify the potential losses and prioritize your mitigation efforts.

Another important aspect of assessing the impact is understanding the interdependencies between different functions. Often, an attack on one function can cascade effects on other business areas. By mapping out these dependencies, organizations can identify potential vulnerabilities and develop strategies to minimize the impact of such attacks. Traditional IT asset mapping techniques, which need help identifying your entire infrastructure, cannot provide the confidence you need. A communications data-based IT asset mapping technique can identify interrelated assets and surface dependencies that your teams were previously unaware of or had forgotten.

Risk assessments are also a valuable tool for assessing the impact of cyberattacks. These assessments identify potential threats and vulnerabilities, allowing your organization to prioritize security measures and allocate resources effectively. Your IT asset inventory should enable you to identify sources of risk, such as single points of failure, policy violations, shadow IT, and more. By considering internal and external risks, your organization can comprehensively understand the potential impact and develop targeted strategies to mitigate these risks.

Implementing Cyber Resilience Measures

Once critical business functions and their potential vulnerabilities have been identified, your organization can implement cyber resilience measures to strengthen its security posture. These measures should be comprehensive, encompassing technical and non-technical aspects of cybersecurity.

Technical measures include implementing robust firewalls, intrusion detection systems, and encryption protocols. These technologies help protect critical IT assets and prevent unauthorized access. Regular security updates and patches should also be applied to protect systems against known vulnerabilities.

Non-technical measures focus on the people and processes within the organization. This includes training employees on cybersecurity best practices, implementing strong access controls, and developing incident response plans. Regular security audits and assessments should also be conducted to identify any gaps or weaknesses in the security infrastructure.

It is important to remember that cyber resilience is an ongoing process. As technology evolves and cyber threats become more sophisticated, organizations must continuously update and adapt their resilience measures.

Additionally, your IT asset map should be dynamically updated and maintained as your organization grows. Regular testing and evaluation of security measures are also essential to ensure their effectiveness and identify any areas for improvement.


In an increasingly digital world, cyber resilience is essential for the long-term success of any organization. You can prioritize your security efforts and allocate resources effectively by identifying critical business functions and their associated IT assets. This proactive approach helps your organization withstand and recover from cyberattacks, minimizing the potential impact and ensuring business continuity.

Identifying critical functions involves a comprehensive examination of the organization's operations and dependencies, including developing a complete list of hardware and software IT assets across your organization. Risk assessments and impact assessments help quantify the potential risks and help you to prioritize your mitigation efforts. By combining technical and non-technical measures, your organization can strengthen its security posture and build cyber resilience.

Building cyber resilience is an ongoing process that requires continuous evaluation and adaptation. Organizations must stay vigilant and proactive in their approach to cybersecurity to effectively protect their critical functions and safeguard their future success. By embracing cyber resilience, your organization can confidently navigate the digital landscape and thrive in the face of ever-evolving cyber threats.

A More Effective Approach

If we aim to tackle the genuine issue of resilience with a comprehensive strategy, it will require an AI engine capable of analyzing all of your IT business transactions.

It's easy to understand why, if such a solution were available, it would have a significant impact and why we anticipate it would enhance the effectiveness of both IT and business, making cyber resilience a valuable asset. In fact, it can potentially revolutionize how businesses utilize technology!

The exciting news is that this system has been successfully implemented in some of the world's largest corporations and government agencies for over five years. Please get in touch with us to find out how Redjack is helping these organizations achieve genuine cyber resilience.

Christina Cravens

Christina is the Chief Growth Officer at Redjack


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