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Olivier H.OH

Olivier H.

Supermalter

Cybersecurity Technical Auditor

€953/day
8 projects
Paris, FR
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Olivier

Qualified IT security consultant (cybersecurity) with 9 years of experience, alternating between offensive and defensive security. My expertise has been acquired and put into practice within IT consulting firms such as Hervé Schauer Consultants (HSC) and ON-X.

My role involves conducting diversified missions, including penetration tests on internal and external infrastructures, web applications (CMS, PHP framework) and mobile applications (iOS and Android), configuration audits (Windows, *Unix, network equipment, databases, cloud), and social engineering tactics (e.g., phishing campaigns, vishing, or physical penetration tests).

With seniority in PASSI qualification, I am not only an experienced technical cybersecurity auditor but also a dedicated technical trainer in this field for the inter-company training organization HS2. I am passionate about skill transfer and raising employee awareness about the importance of cybersecurity.

When conducting my audits (pentests), I favor a combined approach of manual and semi-automated testing, using offensive tools to identify and exploit potential vulnerabilities. Beyond the offensive technical aspect, I also offer consulting and technical support services, while performing in-depth architecture reviews, to ensure state-of-the-art security for my clients.

*English


As a technical auditor with 9 years of experience, I've worked with prominent IT service companies like HSC and ON-X. My expertise encompasses conducting penetration tests, configuration audits, implementing social engineering techniques, and providing cybersecurity training for the HS2 training organization. I adeptly use a blend of manual and semi-automated testing with offensive tools to identify vulnerabilities, alongside providing advisory services and performing architecture reviews.
  • French

    Native or bilingual

  • English

    Fluent

Can work on-site
Paris (up to 30km)

Experience

  • Hevé Schauer Sécurité (HS2)
    Trainer
    EDUCATION AND E-LEARNING
    December 2019 - Today (6 years and 8 months)
    Neuilly-sur-Seine, France
    Technical training in cybersecurity
    Cybersecurity technical training Active Directory Windows 10 Windows Server System Administration Azure Active Directory
  • ON-X Groupe (Sécurité Numérique)
    Pentester
    CONSULTING AND AUDITS
    September 2018 - September 2021 (3 years)
    Puteaux, France
    Qualified PASSI technical auditor and pentester
    Penetration Tests PenTest OWASP Cybersecurity Security Audit Active Directory Social Engineering Windows Mobile Application
  • Hervé Schauer Consultants
    Technical Consultant
    CONSULTING AND AUDITS
    May 2015 - August 2018 (3 years and 4 months)
    Neuilly-sur-Seine, France
    Technical auditor and pentester
    Cybersecurity pentest web pentest

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Education

  • MS SI&S
    ESIEA
    2015
    https://www.esiea.fr/ms-sis/

Certifications

Skill set

Categories