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Cantin LiottardCL

Cantin Liottard

Confirmed Cybersecurity Consultant

On-demand
Orléans, FR
3-7 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Cantin

Confirmed in offensive cybersecurity with a strong background in penetration testing, security audits, and technical operations management. Capable of leading critical missions, analyzing and correcting vulnerabilities, while ensuring client awareness and support in their cybersecurity strategy. Passionate about technical challenges and continuous improvement of information system security.
  • French

    Native or bilingual

  • English

    Fluent

Remote only
Primarily works remotely

Experience

  • ARKALYS SECURITY
    Expert Cybersecurity and Incident Response Consultant
    CONSULTING AND AUDITS
    January 2022 - Today (4 years and 5 months)
    Orléans, France
    • Incident Response (CSIRT): Emergency intervention on major compromises (Ransomware): threat containment, digital investigation (Forensic), and secure restoration of the IS.
    • Architecture and Migration Consulting: Design of resilient architectures and support for firewall migration (Fortinet/Stormshield) and securing Cloud environments (O365/Azure).
    • Audits and Compliance: Configuration audits (Messaging, AD), code audits (WordPress/Web App), and support for GDPR compliance.
    • DevSecOps and Web: Development of "Secure by Design" websites and integration of security best practices into development cycles.
    Cybersecurity Web Development Project Management Training Facilitation
  • CYBERWINGS
    Head of Hacking and Penetration Testing Department
    DIGITAL AND IT
    January 2022 - January 2025 (3 years)
    Paris, France
    - Leadership and Strategy:
    • Operations Management: Planning and macro-supervision of missions for a team of 15 experts. Guarantee of profitability, deadlines, and deliverable quality.
    • Pre-sales and Development: Technical needs qualification, service costing (Man/Days), and commercial proposal writing.
    • Complex Project Management: Management of large-scale audits (e.g., 150 targets over 3 months, budget €70k) with client steering committee facilitation.
    - Technical and Operational Expertise:
    • Penetration Testing: Execution of +30 penetration tests (Web, Internal, External) and production of +150 audit reports with prioritized remediation plans.
    • Strategic Reporting: Presentation of results to Management Committees (simplification of business risks) and technical teams.
    • Innovation: Complete creation of a custom CTF (Capture The Flag) to raise awareness for a QA team and facilitation of Workshops (API Hacking) in engineering schools.
    Project Management Audit Penetration Testing Web Penetration Testing Innovation
  • CSI
    Security & Data Engineer
    CIVIL ENGINEERING
    January 2020 - January 2022 (2 years)
    Conflans-Sainte-Honorine, France
    • Secure Automation: Development of a secure Python API for extracting sensitive data from an ERP.
    • Business Intelligence: Design of Power BI dashboards for strategic entity management.
    • Awareness: Facilitation of cybersecurity training sessions for employees.
    Cybersecurity Automation Web Development Training Facilitation Innovation

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Education

  • null
    OSCP
    2025
  • Hack The Box
    Pro Labs
    2025
    Hack The Box

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