[MCKinsey] The risk-based approach to cybersecurity

The most sophisticated institutions are moving from a “maturity based” to a “risk based” approach for managing cyberrisk. Here is how they are doing it.

Top managers at most companies recognize cyberrisk as an essential topic on their agendas. Worldwide, boards and executive leaders want to know how well cyberrisk is being managed in their organizations. In more advanced regions and sectors, leaders demand, given years of significant cybersecurity investment, that programs also prove their value in risk-reducing terms. Regulators are challenging the levels of enterprise resilience that companies claim to have attained. And nearly everyone—business executives, regulators, customers, and the general public—agree that cyberrisk is serious and calls for constant attention

What, exactly, organizations should do is a more difficult question. This article is advancing a “risk based” approach to cybersecurity, which means that to decrease enterprise risk, leaders must identify and focus on the elements of cyberrisk to target. More specifically, the many components of cyberrisk must be understood and prioritized for enterprise cybersecurity efforts. While this approach to cybersecurity is complex, best practices for achieving it are emerging.

To understand the approach, a few definitions are in order. First, our perspective is that cyberrisk is “only” another kind of operational risk. That is, cyberrisk refers to the potential for business losses of all kinds—financial, reputational, operational, productivity related, and regulatory related—in the digital domain. Cyberrisk can also cause losses in the physical domain, such as damage to operational equipment. But it is important to stress that cyberrisk is a form of business risk.

Furthermore, cyberrisks are not the same as cyberthreats, which are the particular dangers that create the potential for cyberrisk. Threats include privilege escalation, vulnerability exploitation, or phishing.1 Cyberthreats exist in the context of enterprise cyberrisk as potential avenues for loss of confidentiality, integrity, and availability of digital assets. By extension, the risk impact of cyberthreats includes fraud, financial crime, data loss, or loss of system availability.

Decisions about how best to reduce cyberrisk can be contentious. Taking into account the overall context in which the enterprise operates, leaders must decide which efforts to prioritize: Which projects could most reduce enterprise risk? What methodology should be used that will make clear to enterprise stakeholders (especially in IT) that those priorities will have the greatest risk reducing impact for the enterprise? That clarity is crucial in organizing and executing those cyber projects in a focused way.

At the moment, attackers benefit from organizational indecision on cyberrisk—including the prevailing lack of clarity about the danger and failure to execute effective cyber controls. Debilitating attacks on high-profile institutions are proliferating globally, and enterprise-wide cyber efforts are needed now with great urgency. It is widely understood that there is no time to waste: business leaders everywhere, at institutions of all sizes and in all industries, are earnestly searching for the optimal means to improve cyber resilience. We believe we have found a way to help.

The maturity-based cybersecurity approach: A dog that’s had its day

Even today, “maturity based” approaches to managing cyberrisk are still the norm. These approaches focus on achieving a particular level of maturity by building certain capabilities. To achieve the desired level, for example, an organization might build a security operations center (SOC) to improve the maturity of assessing, monitoring, and responding to potential threats to enterprise information systems and applications. Or it might implement multifactor authentication (MFA) across the estate to improve maturity of access control. A maturity-based approach can still be helpful in some situations: for example, to get a program up and running from scratch at an enterprise that is so far behind it has to “build everything.” For institutions that have progressed even a step beyond that, however, a maturity-based approach is inadequate. It can never be more than a proxy for actually measuring, managing, and reducing enterprise risk.

A further issue is that maturity-based programs, as they grow organically, tend to stimulate unmanageable growth of control and oversight. In monitoring, for example, a maturity-based program will tend to run rampant, aspiring to “monitor everything.” Before long, the number of applications queued to be monitored across the enterprise will outstrip the capacity of analysts to monitor them, and the installation of monitors will bog down application-development teams. The reality is that some applications represent more serious vulnerabilities—and therefore greater potential for risk—than others. To focus directly on risk reduction, organizations need to figure out how to move from a stance of monitoring everything to one in which particular applications with high risk potential are monitored in particular ways.

Another issue related to the monitor-everything stance is inefficient spending. Controls grow year after year as program planning for cybersecurity continues to demand more spending for more controls. But is enterprise risk being reduced? Often the right answers lie elsewhere: for example, the best return on investment in enterprise-risk reduction is often in employee awareness and training. Yet a maturity-based model does not call for the organization to gather enough information to know that it should divert the funding needed for this from additional application monitoring. Spending on both will be expected, though the one effort (awareness and training) may have a disproportionate impact on enterprise-risk reduction relative to the other.

If the objective is to reduce enterprise risk, then the efforts with the best return on investment in risk reduction should draw the most resources. This approach holds true across the full control landscape, not only for monitoring but also for privileged-access management, data-loss prevention, and so forth. All of these capabilities reduce risk somewhat and somehow, but most companies are unable to determine exactly how and by how much.

The final (and most practical) drawback of maturity-based programs is that they can create paralyzing implementation gridlock. The few teams or team members capable of performing the hands-on implementation work for the many controls needed become overloaded with demand. Their highly valuable attention is split across too many efforts. The frequent result is that no project is ever fully implemented and program dashboards show perpetual “yellow” status for the full suite of cyber initiatives.

The truth is that in today’s hyperconnected world, maturity-based cybersecurity programs are no longer adequate for combatting cyberrisks. A more strategic, risk-based approach is imperative for effective and efficient risk management.

Reducing risk to target appetite at less cost

[to continue, CLICK HERE]

Leave a Reply

This site uses Akismet to reduce spam. Learn how your comment data is processed.