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Nicolas Béguier

Head of Security at 52 Entertainment
Co-Founder at Tandem Technology

GPG key

Certification & Training

SANS Technology Institute

SEC530

Oct 2022

GIAC Defensible Security Architecture

Certified

SANS Technology Institute

SEC588

Nov 2021

GIAC Cloud Penetration Testing

Certified

SANS Technology Institute

SEC575

Oct 2020

GIAC Mobile Device Security Analyst

Certified

SANS Technology Institute

SEC642

Mar 2020

Advanced Web App Penetration Testing, Ethical Hacking, and Exploitation Techniques

CERTyou

CISSP

Apr 2019

Certified Information Systems Security Professional

Université de Bordeaux

Master CSI

Mar 2013

Cryptology and Computer Security

Certified

Experience

TODO

Founded in 2022 by cryptography and cybersecurity experts, Tandem Technology is an independent consulting and auditing firm.

We provide auditing and training programs tailored to your needs.

This means working together to develop your security goals.

Design infrastructure and applications to protect them against external or internal malicious adversaries.

Performing information security monitoring, threat analysis and vulnerability management.

Forensic analysis, incident response and internal formation about advanced developpement security practice.

Pentest of web and mobile applications, internal infrastructures of Leboncoin Group.

Defensive activity, development of tools to automate the detection of malicious domain names, public exposure of our assets and vulnerabilities on our infrastructure.

Forensic analysis, incident response, technology intelligence, support for developers on the correction of identified vulnerabilities.

Safety awareness of Leboncoin employees and IT.

The GIAC Advisory Board is made up of GIAC certified professionals who want to take a more active role in the GIAC community. The Advisory Board provides a forum where information security professionals can exchange ideas and advice, and discuss issues directly related to GIAC and SANS business, such as training and certification.

I worked with multiple features teams and helped them to deploy and in a high availability environment:
  • FT Authentication & Security (2019)
  • FT Identity: Identity and Access Management (IAM) (2017-2018)
  • FT Ads: Ad deposit and Ad view (2017-2018)
With Authentication & Security:
  • Implement OAuth2 flow for a Leboncoin SSO and preserve users personal identifiers information
  • Blue: Observe, Alert and Mesure security events (NIDS Suricata, HIDS, Security dashboard Patrowl)
  • Red: Web Application mostly
As a SRE/devops/sysadmin :
  • Manage a large IaaS (OpenNebula) and PaaS (Kubernetes)
  • Security improvement (authentication with CASSH, IDS)
  • Fireman

Within the system administrator team, we were responsible of a large number of servers located in several datacenters.

Automated infrastructure deployment via Puppet
Monitoring and log managment
Fireman

Set up of a RADIUS server in a large infrastructure (>1000 employees)