The idea of “zero risk” is not realistic, yet it continues to surface in meetings, strategic plans and, at times, in implicit management expectations. Risk never disappears completely. What can and should exist is a conscious, structured approach to risk management, aligned with what the organisation is willing to accept. 

It is precisely in this distinction between zero risk and acceptable risk, commonly referred to as risk appetite, that maturity begins. 

Risk management: the foundation of information security 

Risk management is the central element of any information security management system. Not as a theoretical or purely documentary exercise, but as a process that enables organisations to identify, assess and treat risks that may affect critical assets. 

Each risk results from the combination of probability and impact. Probability reflects the likelihood of an event occurring, while impact represents the consequences that such an event would have on the business, whether operational, financial, legal or reputational. 

It is through this analysis that risk severity is determined and priorities are defined. Without this context, any investment in security risks becoming arbitrary or disproportionate. 

Acceptable risk and residual risk: key concepts for maturity 

One of the most important and frequently misunderstood concepts is acceptable risk. No organisation is capable of eliminating all risks. What defines a mature risk management process is determining the level of risk the organisation is prepared to operate with, taking into account its context, sector, objectives and risk tolerance. 

Even after security controls are implemented, residual risk always remains. This risk represents what persists after mitigation measures have been applied. Acknowledging its existence is not a sign of weakness, but rather of realism and maturity. 

The most common mistake is attempting to reduce risk to zero, creating unrealistic expectations and overly complex structures that are difficult to manage and sustain. 

ISO 27001 and ISO 27005: framework and flexibility 

ISO 27001 provides the framework for implementing an Information Security Management System (ISMS), explaining why risk management exists and what it is intended to achieve. ISO 27005, in turn, deepens the technical component of the process, detailing how to identify, analyse, evaluate and treat risks. 

One of the main strengths of this model is its flexibility. The process can be adapted to the size, sector and complexity of each organisation. Provided that the context is clearly defined, including assets, impact and probability criteria, risk appetite and scope, risk management becomes a practical tool aligned with real operational needs. 

Identifying risks: assets, events and context 

Risk identification can follow different approaches. Some organisations start with assets, analysing risks associated with data, systems, people or procedures. Others adopt an event-based approach, focusing on scenarios such as attacks, operational failures or security incidents that may affect multiple assets simultaneously. 

Regardless of the method chosen, the objective remains the same: to understand where the organisation is exposed and why. Without this clarity, subsequent analysis loses its value. 

Treating risk: informed decisions, not automatic reactions 

Once assessed, risks are compared against the criteria defined at the beginning of the process. This is where decisions are made regarding which risks should be prioritised and how they should be addressed. 

The strategies are well known: avoid, mitigate, transfer or accept risk. The critical point lies in the decision itself. The most expensive control is not always the most appropriate. In some cases, the cost of mitigation outweighs the potential impact, making acceptance a rational choice. 

This ability to make informed decisions, rather than reacting automatically, is one of the clearest indicators of maturity in cybersecurity. 

Monitoring and review: a process that never ends 

Risk management does not end with the implementation of controls. There is always a phase of monitoring and review, where the effectiveness of the measures adopted is assessed. Performance indicators and metrics help determine whether risk is, in fact, being reduced. 

Changes in infrastructure, business models, suppliers or the threat landscape require regular reassessment. Risk management is a continuous process that evolves alongside the organisation and the digital ecosystem. 

Cybersecurity as a holistic process 

Another fundamental aspect is recognising that risk management is not limited to technology. It includes people, behaviours, policies, procedures and organisational culture. Phishing attacks, human error or unsafe practices can have just as much impact as technical vulnerabilities. 

It is this holistic approach that makes risk management one of the most comprehensive tools for sustaining information security in a consistent manner. 

Conclusion: maturity means managing risk, not eliminating it 

Maturity in cybersecurity is not measured by the absence of risk, but by the ability to understand it, manage it and keep it within acceptable levels. Between zero risk, which does not exist, and acceptable risk, which is consciously defined, lies the real work of organisations that take information security seriously. 

Managing risk means making informed decisions, aligned with the business and sustained over time. That is where true resilience begins.