Atef Abdelkefi

CSO|Interim management|Founder CyberYoom consultancy|🏆 International 40 Under 40 in Cybersecurity Winner|Public Speaker

Paris, Île-de-France, France

About

With over 16 years at the helm of cybersecurity, I have not only honed my technical skills and strategic foresight as a Chief Information Security Officer (CISO) but also excelled in leading multicultural and diverse teams of cybersecurity experts. My journey has taken me through a variety of sectors (energy, industrial, telecom, luxury, banking, finance, etc) in Norway, Sweden, Denmark, Finland, the UK, Qatar, and France, managing substantial budgets that surpass 10 million € of CAPEX and as much of OPEX. This global tenure has endowed me with an invaluable perspective on safeguarding digital assets and infrastructure, crafting robust security strategies that resonate with both business goals and compliance demands. My leadership style is rooted in inclusivity and collaboration, fostering a cybersecurity culture resilient to the dynamic threat landscape and nurturing innovation within my teams.

Experience

  • Group CISO at Axione
    Mar 2025 - Present · 1 yr 5 mos

  • Founder & CEO/ Directeur Générale at CyberYoom
    Apr 2022 - Present · 4 yrs 4 mos

  • Group CISO/Directeur cybersecurité groupe at Solocal
    Jul 2024 - Jun 2025 · 1 yr

  • Cybersecurity director/Directeur cyber sécurité de transition at TDF
    Dec 2023 - Jun 2024 · 7 mos

    Cyber maturity assessment and establishment of the cybersecurity program that aims to secure TDF from the identified cyber risks during the Olympics. *2.1M€ budget estimation, negotiation, and assignment for the cybersecurity program *Definition of the organization and the TOM to execute the cybersecurity program. *Management and quality control of 15 projects that are required to be de delivered in June 2024: - Cyber crisis management - AD hardening security (Deployment of Semperis ADFR & DSP) - Logpoint SIEM deployment - Trellix EDR and Stamus NDR deployment - Anti-DDOS & anti-phishing deployment - Security of the OT systems (Hardening of the network components, new Radius, etc)

  • Global Head of Security Operations & Technology Platforms at Hermès
    Jun 2023 - Dec 2023 · 7 mos

    *Definition of the strategy & roadmap of the operational cybersecurity department at Hermès *Establishment of the first operational cybersecurity at Hermès (0 to 5 in 6 months) *Definition of the Target Operating Model (TOM) and procedures for the operational cybersecurity at Hermès *Management of the BAU (Business as Usual) for cybersecurity tools such as (Tanium, SentinelOne, CyberArk, Netskope, Imperva) *Contribution of the cybersecurity program (CyberArk International, Zero-Trust, Shadow IT)