Becoming a CISO: the career path and skills to build

For many security professionals, the CISO role looks like the top of the ladder. Yet almost nobody gets there along a ready-made path, and the best technicians do not automatically make the best CISOs. This guide explains what the job really requires, the routes that lead to it and the skills to build so that you are credible when the opportunity comes.

What a CISO actually does

The Chief Information Security Officer runs security for an organisation. They do not do everything themselves: they set priorities, secure resources, get work done by teams they do not always manage and report to leadership.

Typical responsibilities:

• Setting a strategy: an assessment, a prioritised roadmap, a budget.
• Managing risk: tying every security measure to a business risk leadership can understand.
• Owning compliance: ISO 27001, the NIS2 directive, DORA in financial services, GDPR alongside the data protection officer.
• Leading crisis management: preparing teams, making decisions during a major incident, learning from it afterwards.
• Managing people: an internal team, suppliers (outsourced SOC, auditors, integrators) or both.
• Persuading: the executive committee, business units, IT, sometimes customers and authorities.

The job changes a lot with the size of the organisation. In a small company, the CISO stays very hands-on; in a large group, most of the time goes into arbitration, coordination and presenting. Our guide for employers on hiring a CISO covers these differences, and it also shows you how employers will assess you.

What NIS2 changes for the role

The NIS2 directive (Directive (EU) 2022/2555, available on eur-lex.europa.eu) makes management bodies responsible for approving and overseeing cybersecurity risk-management measures, and requires them to follow training. For a CISO, that means more frequent and more demanding conversations with executives. Explaining a risk and proposing a decision becomes a core skill, not a bonus.

The paths that lead to the role

No single "CISO degree" is enough on its own. Most CISOs reach the role after several years in another job, and that starting point shapes how they work.

None of these paths is better than the others. What matters is spotting early what you lack and closing the gap before you apply. If you come from compliance, our article on becoming a GRC consultant describes a common intermediate step. If you come from the SOC, the one on moving from Tier 1 to Tier 3 shows how to take on more responsibility before aiming at a leadership role.

Common stepping stones

Few people become CISO straight from an expert role. The most frequent steps:

• Deputy CISO in a mid-sized or large organisation: the best training ground, because you see the role from the inside.
• CISO of a subsidiary or a site within a group.
• Head of a security team (SOC, security operations, GRC), with a budget and real trade-offs.
• Governance consultant or fractional CISO, which exposes you to many contexts in a short time.
• First CISO of a small company, often a very broad role where you learn fast, provided you accept doing a lot yourself.

The skills to build

A CISO is judged on their ability to move an organisation forward. These are the skills hiring panels try to verify.

Understanding and ranking risks

Running a risk analysis and turning it into priorities. In France, the ANSSI's EBIOS Risk Manager method is a reference. The point is not to know the method by heart, but to be able to say what you will not do, and why.

Keeping real technical depth

Enough to challenge an architect, a supplier or a vendor, and to spot an evasive answer. A CISO who no longer understands the technology depends entirely on what they are told.

Talking to leadership

Presenting a situation in a few minutes, without jargon, with a clear decision to make. This is often what separates an excellent expert from a future CISO.

Handling a crisis

Having taken part in handling a serious incident, or at least in crisis exercises, and being able to explain what you decided. The ANSSI publishes a guide on organising cyber crisis exercises that is useful preparation.

Managing and getting others to deliver

Hiring, growing a team, steering suppliers, getting help from teams over which you have no direct authority.

Owning budget and procurement

Building a budget, defending it, comparing offers, following a contract. These topics are rarely taught in technical careers, yet they are part of the daily job.

A concrete progression plan

Here is a realistic approach to get closer to the role, whatever your current job.

1. Ask for cross-functional responsibilities: lead a compliance project, represent your team on a committee, prepare an audit.
2. Write a roadmap for your current organisation or a fictional one: assessment, three priorities, what you postpone, the budget needed.
3. Present it to a non-specialist and note the questions they ask. Those are an executive committee's questions.
4. Take part in a crisis exercise, or run a small one within your team.
5. Own a supplier relationship: requirements, follow-up, review of deliverables.
6. Mentor someone, even informally: an apprentice, a new hire, a junior.
7. Read the reference texts: NIS2, the ANSSI guides (IT hygiene, EBIOS Risk Manager, crisis management), the ISO 27001 standard.

What about certifications?

Certifications such as CISSP, CISM or ISO 27001 Lead Implementer are frequently requested in job ads and can help you pass the first filters. They show a broad grasp of security and governance, but they do not prove that you can make decisions under pressure. Our article on the right certifications for the role you want helps you choose the ones that make sense for you.

Preparing for CISO interviews

Hiring a CISO usually involves a longer and more varied process than an expert role. Expect to meet the CEO, the CIO, one or more business leaders, and sometimes an independent security expert.

A case study is common: a file on the company, a partial assessment, budget constraints and a question along the lines of "what are your priorities for the first six months?". Be ready to:

• present three priorities and justify what you leave aside;
• react to a simulated incident during your presentation;
• explain how you would report progress to leadership;
• describe a crisis you lived through, your decisions and what you would do differently.

Ask your own questions too, because they matter as much as your answers: who will you report to, what budget exists, what authority will you have over trade-offs, how does the company protect its CISO? On pay, the range is wide depending on organisation size, sector, regulatory exposure and the scope of the mandate; our guide to negotiating your salary in cybersecurity helps you approach the topic.

Mistakes to avoid

• Believing technical expertise is enough: it is necessary, but the job is won on decision-making and communication.
• Accepting a role without a mandate: a CISO title with no clear reporting line and no resources leads to frustration.
• Collecting certifications instead of gaining leadership experience.
• Arriving at the interview without a vision: a list of controls is not a prioritised roadmap.
• Underestimating the load: on-call duties, crisis management and accountability to leadership come with the role, so discuss them openly before you sign.

In short

Becoming a CISO means moving from expert to leader. Start from your current job, identify what you lack across technology, governance, communication and management, then look for the responsibilities that let you build it. A roadmap you can defend is worth more than a list of certifications.

Preparing your next step towards a CISO or deputy CISO role? Join the Cyber Recrut network for free: our recruiters work alongside security practitioners, and our shortlisted candidates prove their skills on hands-on labs and real-world scenarios. See also how we work.