The CISO-CIO Relationship Is Difficult for a Good Reason
The CISO-CIO relationship is often described as a problem of personalities, communication styles, or competing executive agendas, but that explanation is too simple. A CIO who wants technology to remain available, efficient, scalable, and capable of supporting the business is doing the job the organization expects. A CISO who questions whether the same environment is resilient, defensible, compliant, and sufficiently protected is doing exactly the same.
The difficulty begins because both executives increasingly govern different consequences of the same decisions.
A cloud migration may improve scalability and simplify infrastructure, while simultaneously changing data flows, third-party dependencies, access models, and recovery assumptions. Connecting manufacturing systems to analytics platforms may increase operational visibility, but it can also pull previously isolated systems into the cybersecurity perimeter. Generative AI may improve productivity while creating new questions around data exposure, identity, intellectual property, and misuse.
The technology decision and the security decision are no longer easy to separate.
That change is reflected in recent research on the CISO role itself. Christopher Ramezan’s 2025 analysis of 250 CISO job postings across 27 countries found that organizations increasingly define the CISO as a strategic and management-focused executive rather than a deeply tactical technical specialist. Risk management, policy, strategic planning, incident management, communication, governance, and business alignment appear far more prominently than programming or expertise with specific software.
The CISO is no longer merely protecting systems after the technology organization has designed them. The role is moving directly into decisions about how technology should be governed, what risk is acceptable, where investment should go, and how business strategy should account for cyber exposure.
The boundary between CIO and CISO is therefore becoming harder to draw at exactly the moment when organizations need that boundary to be better governed.
Five Points of Tension in the CISO-CIO Relationship
Technology Speed vs. Security Risk
The easiest version of the CISO-CIO conflict is the familiar one: the CIO wants speed, while the CISO wants control. In practice, however, most of the difficult decisions are not that clean.
The CIO may be accountable for availability, modernization, digital transformation, service delivery, and technology costs. The CISO may be accountable for cybersecurity strategy, resilience, risk management, security policy, and incident readiness. Operations wants systems to keep running, finance wants investment discipline, and the business wants new capabilities without unnecessary delay.
Eventually, all of those priorities meet in the same architecture.
The 2025 interview with Nestlé Group CIO Chris Wright and CISO John Petersen illustrates this particularly well. Their environment has changed from relatively centralized IT systems to a much more complex landscape involving cloud services, SaaS, connected factories, operational technology, AI, global data movement, and geopolitical risk. Wright notes that a growing portion of the CISO’s work no longer concerns conventional IT applications at all, yet many security decisions still require the CIO’s teams to act quickly.
The CISO may identify the exposure, but the CIO often controls much of the environment required to change it. The CIO may own the technology program, while the business ultimately owns the consequences of delaying it or accepting the remaining risk.
Once the disagreement is framed as “security versus the business,” the conversation is already too shallow. The real question is how much security, resilience, speed, cost, and operational flexibility the organization is willing to buy, and what risk it is prepared to keep.
That is not a decision either executive should have to make alone.
Should the CISO Report to the CIO?
Few questions generate as much debate as whether the CISO should report to the CIO.
The argument for separation is obvious. If the CISO reports to the executive responsible for technology delivery, the person expected to challenge technology risk may also be subordinate to the person whose priorities they occasionally need to slow, question, or escalate.
The opposite argument is equally practical. Cybersecurity recommendations eventually have to change networks, platforms, applications, endpoints, identities, cloud environments, and operational processes. A CISO who is organizationally independent but too far removed from technology execution may have authority on paper and very little influence in practice.
Nestlé keeps the CISO within the CIO organization. Both executives say this helps security and IT act faster when infrastructure teams need to change priorities. Petersen also argues that, unlike CISOs who mainly advise on policy from outside IT, having operational responsibility gives him more direct influence over security outcomes.
That does not mean every CISO should report to the CIO. The authors themselves note that there is still limited research capable of identifying one reporting model as universally superior.
The more useful question is whether the organization preserves both influence and challenge.
The CISO needs enough proximity to technology decisions to shape them before they become expensive to reverse, but also needs a credible escalation route when security concerns cannot be resolved inside the technology organization. The CIO needs the authority to run technology without every disagreement becoming a governance crisis, but should not quietly absorb enterprise cyber risk simply because the affected systems sit inside IT.
The reporting line matters. The decision rights around it matter more.
Security Budgets: Who Pays, Who Prioritizes, Who Accepts Risk?
Budget conversations expose the CISO-CIO relationship particularly quickly because security spending competes with every other technology priority.
The security function can almost always identify another control, monitoring capability, specialist, redundancy layer, or remediation program that would reduce risk. The CIO can almost always identify another modernization project, reliability improvement, automation initiative, or capacity investment with obvious operational value. Somewhere outside both functions, the business is asking why either one needs more money.
Wright describes cybersecurity investment alongside other technology and resilience investments such as failover systems, reliability, and upgrades. Petersen similarly emphasizes that security spending needs to be tied to the risk being reduced rather than defended as a principle in itself.
In many cases, budget disagreements are actually disagreements about risk. The CISO should be able to explain what exposure an investment reduces, what remains afterwards, and what happens if the decision is delayed. The CIO should be able to explain which competing technology or operational objective will be displaced. If the trade-off is significant enough, the final decision may need to move above both executives.
Cybersecurity then becomes part of normal enterprise risk allocation rather than a protected category of spending that must be justified through fear.
How CISO-CIO Trust Shapes Incident Response
Governance is relatively easy when there is time to prepare the presentation, gather evidence, schedule a committee, and debate the options. Cyber incidents rarely provide that luxury.
The CIO-CISO relationship becomes especially important when decisions must be made quickly and without a large steering group. Incidents, third-party issues, false breach claims, and reputational threats may require technical analysis and external communication to move almost at the same time. Wright describes situations in which a public claim can spread quickly enough that the organization has very little time to prepare a response, even when no genuine breach has occurred.
In those moments, trust stops being a soft leadership concept and becomes part of incident-response capability.
A CISO who has to spend the first hour convincing the CIO that a warning deserves attention has already lost time. A CIO who has learned that every security concern arrives labelled as urgent may hesitate when urgency is finally justified. A relationship in which difficult information is carefully packaged to manage perception will move more slowly than one in which uncertainty can be discussed openly.
Trust is especially important in these situations. Both executives need to be able to raise difficult concerns and discuss uncertainty without turning the conversation into a defence of their own function.
For that reason, CIO-CISO collaboration should be tested in the same way organizations test technical recovery and crisis communication. Tabletop exercises should force disagreements about shutting systems down, restoring potentially compromised services, delaying remediation, accepting degraded operations, prioritizing business units, and acting on incomplete information.
The point is not to make the CIO and CISO agree beforehand.
The point is to understand how they make decisions when they do not.
Cyber Risk Ownership: Responsibility Without Authority
The modern CISO is frequently held responsible for protecting an environment they do not fully control.
Ramezan’s study shows how broad the role has become, covering areas such as risk management, incident response, privacy, strategy, and business continuity. Yet many of the systems creating those risks belong elsewhere. Infrastructure may sit with the CIO, operational systems with business units, and vendor decisions with procurement.
This creates a dangerous gap between responsibility and authority.
The CISO may be accountable for cybersecurity without having the authority to determine every technology architecture. The CIO may own the systems without having the authority to accept every business consequence of the risks they create. Business leaders may own the outcome without understanding the technical exposure underneath it.
When those distinctions remain implicit, the same risk can be identified by security, technically owned by IT, delayed by operations, financially deprioritized by leadership, and still appear after an incident as a failure of the security team.
That is not a communication problem. It is a governance problem.
Shared Cybersecurity Responsibility Needs Clear Decision Rights
It is tempting to solve this by saying that cybersecurity is everyone’s responsibility, but broad shared responsibility can become just another way of avoiding precise accountability.
The organization still needs to know who sets mandatory security requirements, who owns implementation, who can approve an exception, who accepts residual business risk, and when disagreement must be escalated.
Those answers do not need to live entirely with either the CIO or the CISO.
They do need to exist before the decision becomes urgent.
The same principle applies earlier in the technology lifecycle. When security first enters a major project after the architecture has been selected, contracts signed, and launch date announced, almost every control becomes more expensive. The CISO is then forced either to accept exposure or become the executive delaying the initiative, while the CIO is forced to defend decisions that may have been reasonable before security entered the conversation.
Early involvement changes the economics of the disagreement.
Security can shape architecture while alternatives still exist, and technology teams can challenge security assumptions before they harden into requirements.
That is where productive CIO-CISO collaboration actually begins.
Conclusion: Stop Trying to Remove the Tension
There will always be moments when the CISO wants more control, the CIO wants more speed, or operations cannot support the remediation window security would prefer.
That does not mean the relationship has failed.
The failure begins when the trade-off remains hidden, when nobody knows who has authority to make the decision, when security is left accountable for a choice it could not control, or when technology quietly absorbs a level of business risk it was never authorized to accept.
The goal is not perfect agreement between the CIO and CISO. It is productive friction supported by clear governance and decision rights.
As their responsibilities continue to overlap, organizations will need to get better at managing the space between security, technology, operations, and business priorities.
The key question is simple: when the next technology decision creates both business value and cyber risk, does everyone already know who gets to decide what happens next?
For Further Reading
This blog post is based on insights and analysis from:
- Johnson, M. Eric, and Hans Brechbühl. “The CIO–CISO relationship in a globally networked business – An interview with Nestlé AG.” Electronic Markets 35.1 (2025): 44.
https://doi.org/10.1007/s12525-025-00786-8
- Ramezan, Christopher A. “Understanding the chief information security officer: Qualifications and responsibilities for cybersecurity leadership.” Computers & Security 152 (2025): 104363. https://doi.org/10.1016/j.cose.2025.104363