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The “CISO carousel” is recurring turnover among chief information security officers. Its main cybersecurity risk is loss of continuity: a successor must learn the business, rebuild relationships and reassess priorities while long-term security work may be paused or redirected. For boards, that makes CISO retention and transition planning issues of governance and financial risk—not just staffing.
What the CISO carousel means
A chief information security officer (CISO) is responsible for helping an organization manage cybersecurity risk. The carousel describes a cycle in which a CISO leaves and a successor inherits the role before major initiatives, relationships or governance routines are firmly established.
SecurityWeek’s September 26, 2023 analysis cited 18 months as the commonly quoted average CISO tenure, while noting that tenure varies with an organization’s size and maturity. Treat that as a dated estimate, not a universal benchmark: it does not establish how long a CISO will stay at a particular enterprise or predict whether a specific security program will succeed.
Why CISOs leave
SecurityWeek’s 2023 analysis grouped the reasons into four broad pressures. They can overlap, and turnover should not automatically be attributed to an individual or a single breach.
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Blame after an incident
After a breach, an organization may make its CISO a visible target for blame, even when the response, available resources, decision rights or relevant legal constraints were shared across the business. Fear of being dismissed—or held personally responsible for decisions outside the role’s control—can also make the position less attractive.
Responsibility without authority
A CISO may be held accountable for security outcomes without adequate budget, staffing, access to decision-makers or authority to change risky practices. Sounil Yu, CISO at JupiterOne, described this imbalance as “accountability without authority.” When responsibility and power are misaligned, a leader can be blamed for risks they have not been empowered to address.
Stress and burnout
Persistent incident pressure, overwork and concern about personal liability can take a toll. So can the difficulty of demonstrating success when good security work often means that a damaging event does not occur.
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SecurityWeek cited a Salt Security survey in which 48% of CISOs identified personal litigation as their top personal stressor, while 1% reported no personal challenges. The article did not state the survey year or methodology, so these are secondary figures with limited context, not a complete measure of CISO wellbeing.
A more attractive next role
Some experienced CISOs leave after improving a security program because another organization offers a larger mandate, budget, team or level of authority. Turnover can therefore reflect not only strain or dissatisfaction but also a leader’s search for greater scope.
What the evidence says about board support
Several dated survey findings point to a gap between security leaders’ responsibilities and their influence. In an August 2023 survey of 150 UK security decision-makers, BSS reported that 28% felt their security role was valued, 22% said they were actively involved in wider business strategy and 9% said cybersecurity was always among the board’s top three priorities. These figures describe the respondents in that UK survey; they should not be read as current, global estimates of board practice.
Board communication can compound the problem. An Advanced Cyber Security Center and CyberSaint report quoted board members lamenting that management teams continued to give them “overly technical reports” that failed to frame governance in business and financial terms. If leaders cannot see how a security recommendation relates to operational disruption, customer impact or financial exposure, it is harder to make informed decisions about authority and resources.
How frequent turnover can affect enterprise cybersecurity
Long-term initiatives can lose momentum
Security work often spans multiple planning cycles. When a leader leaves, a replacement may pause, redesign or abandon an implementation while deciding whether it still fits the organization’s risks and architecture. A pause is not automatically a mistake; the danger is making the decision without a clear record of the original objective, progress, dependencies and residual risk.
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Business context must be rebuilt
An incoming CISO needs to understand the organization’s risk tolerance, technology environment, operating constraints and relationships with business leaders. Until that context is in place, it can be difficult to distinguish a genuine control gap from a deliberate trade-off or a project already under way.
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Ownership can fall between leaders
Changing priorities and unclear handoffs can leave controls without a clear owner. The board may also lose visibility into which risks were accepted, which recommendations were funded and which remain unresolved. The exposure is not simply that one executive departs; it is that accountability and decisions may not be documented well enough to survive the change.
Security proposals may not win support
Technical findings alone may not explain the business consequences of an unresolved risk. Without a shared way to discuss likely operational, customer and financial effects, boards can struggle to compare security investments with other demands on time and budget. The result can be a mismatch between the outcomes expected of the CISO and the resources or decision rights provided.
How boards can reduce the risk of a CISO departure
Retention is not only about keeping a particular executive. The aim is to give the role enough authority and support to be viable, while ensuring that security decisions remain understandable and actionable if the leader changes.
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- Give the CISO meaningful access and authority. Clarify the reporting line, decision rights and access to the board. A CISO should be able to raise material risks and explain what action requires executive or board approval.
- Match accountability with resources. Review whether agreed security priorities have the budget, staffing, tools and external support needed to progress. If funding is declined or delayed, record the resulting residual risk and who accepted it.
- Use business-facing risk reporting. Connect security recommendations to financial, operational and customer outcomes, rather than relying on technical detail alone. Chris Wilkinson, a BSS director, said CISOs need “a seat at the table” and called the reported low prioritization of information security unacceptable in light of evolving threats and potential financial and reputational penalties.
- Separate incident review from reflexive blame. After an incident, examine decisions, controls, resources and shared responsibilities. A breach warrants scrutiny, but it is not by itself proof that one executive failed.
- Protect continuity across leadership changes. Maintain a roadmap, named owners, decision records and documented risks so that work does not depend on one person’s memory or relationships.
What CISOs can do to make the program durable
CISOs cannot create board authority or funding on their own, but they can make decisions and trade-offs easier to see and carry forward.
- Translate technical risk into business consequences. Explain what may be affected, how a proposed control changes the exposure and what remains at risk if action is deferred.
- Make decision rights explicit. Document what the security team can implement, what requires another executive’s approval and where a board decision is needed.
- Record recommendations and residual risk. Keep a clear account of material recommendations, decisions, owners and unresolved exposure. This supports accountable governance without implying the CISO controls every outcome.
- Build repeatable governance. Use consistent reporting and review routines that can continue when executives change. A durable process preserves the reasoning behind priorities rather than merely passing along a list of projects.
What a new CISO should establish first
The first priority is to understand the current position before making broad changes. A practical sequence is to establish decision context, identify continuity risks and agree on the governance needed to address them.
- Clarify the mandate. Confirm the CISO’s reporting line, authority, board access, available resources and expectations after an incident. Identify which decisions are outside the role’s control.
- Map active commitments and risks. Review current initiatives, their owners and dependencies, open security recommendations, accepted risks and upcoming decisions. Identify work that could be disrupted by the leadership transition.
- Learn the business context. Meet relevant executives and operational leaders to understand risk tolerance, business priorities and constraints that affect security decisions.
- Agree on a board-ready reporting approach. Present material risks in terms of business and financial consequences, decisions required, and the exposure that remains if action is not taken.
- Set a continuity routine. Establish regular reviews of priorities, owners, progress and residual risk so the program can be maintained and handed over if leadership changes again.
How to assess whether the role is set up to succeed
Boards and executives can use five questions to test whether expectations and support are aligned:
- Authority: Does the CISO have a clear reporting line, decision rights and access to the people who can act on material risks?
- Resources: Do agreed priorities have realistic funding, staffing, tools and external support?
- Business alignment: Are security measures connected to financial, operational and customer outcomes?
- Continuity: Are roadmaps, decisions, ownership and institutional knowledge documented well enough to survive a handoff?
- Personal risk: Are incident accountability, legal support and expectations after a breach realistic and clearly defined?
A gap in any one area can undermine the role; gaps across several make it harder for a CISO to deliver the outcomes the organization expects.
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