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Emmanuel GuetEG

Emmanuel Guet

Cybersecurity Expert / Pentest & Forensics

€199/day
1 project
Paris, FR
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Emmanuel

With a solid **8 years of prior experience in cybersecurity acquired in consulting**, I now put my expertise at your company's service.

Specializing in **penetration testing / Red Team**, I have successfully led and executed a multitude of critical missions, including the physical, network / AD, and application audit of a company spread across 6 major sites in the United States, and more generally the security of large-scale corporate networks, primarily under Active Directory.
My role asSenior First Responderwithin Wavestone's CERT-W (Computer Emergency Response Team) also allowed me tolead large-scale incident response and crisis management interventionsfor major attack cases like Wannacry and !Petya, as well as for targeted incidents that have remained confidential since.
My interventions have benefited major international and French clients, through conducting approximately 40 significant incident responses in a team, spread over these 36 months (and more over the last ~6 years). Each mission is accompanied by the production of precise deliverables (detailed report, timeline, managerial summary, in various formats) allowing for effective understanding and action in the face of the mission's findings.

I am alsoOSCP certified(Offensive Security Certified Professional), attesting to recognized competence in penetration testing and incident response.
I also apply these skills in my free time bydoing Bug Bounty, being a top 1% researcher on the HackerOne site(Hackerone.com/Greeny).

My scope of action can, however, extend to much more, do not hesitate to contact me :)
Generally speaking, I am starting with a particularly low TJ for the first few months with the goal of starting my business.
  • French

    Native or bilingual

Remote only
Primarily works remotely

Experience

  • Datadog
    Security engineer
    DIGITAL AND IT
    November 2024 - Today (1 year and 7 months)
    Paris, France
    I mainly work on security incident management and associated automation.
    Incident Response Software Engineering GO
  • WAVESTONE
    Cybersecurity Expert (Pentest & CERT)
    September 2016 - Today (9 years and 9 months)
    La Défense, Puteaux, France
    My activities are structured around the following 2 main areas:
    / Red Team & Multiple Penetration Tests
    / Incident Response within the framework of the CERT (Computer Emergency Response Team) Wavestone (CERT-W)
    These missions are mainly carried out for major international and French clients.

    A little more detail below:

    / Red Team & Penetration Tests: Leading and carrying out multiple Red Team type audit missions (Example 1: physical, IT, and application audit of 6 sites on the East Coast of the USA - Example 2: physical intrusion, Active Directory then lateral propagation for a major railway client)
    -> and more generally: Corporate IT systems (mainly Active Directory / Linux); multiple applications like web, external mapping and associated audit, etc.

    / CERT-W: Leading as Senior First Responder multiple incident responses, crisis management, forensic interventions, reconstruction of attacked corporate IT systems. All on known and massive incidents like Wannacry, !Petya or Hôpital de Corbeil-Essonnes, or on targeted incidents that have remained confidential to date (total of about 40 interventions led in a team of 3, over ~36 months)

    / And in all cases: Production of deliverables allowing the company to appropriately consider the findings and feedback of the led mission
  • HackerOne.com
    Security Researcher - Bug Bounty
    January 2016 - Today (10 years and 5 months)
    Paris, France
    Performing Bug Bounty on HackerOne.com (international leader in Bug Bounty)
    Top 1% of site researchers (impact = 31), identifying significant vulnerabilities on several major (but confidential) programs.

    Feel free to ask me any questions about this.
    Link to my profile: https://hackerone.com/greeny

Reviews

5.0

Out of 1 rating

EléaE

Eléa

NABBOO

Reviewed on 11/25/2024

Emmanuel did an impeccable job for us. Communication was smooth and collaboration went extremely well. Don't hesitate to call on him for your missions!

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Education

  • Master of Engineering
    EPITA: Computer Engineering
    2016
    Master's degree, Engineering - System network and security
  • Two-year university degree, Engineering
    Beijing Jiaotong University
    2013
    Two-year university degree, Engineering

Certifications

  • OSCP
    OffSec
    2017
    Penetration Testing PenTest Intrusion Test

Skill set

Categories