Yvan Lievre

As CEO & founder of CyberConsulting, I assist SMEs and mid-sized companies in securing and optimizing their information systems.

My approach is based on 3 pillars: cybersecurity, infrastructure, and strategic management.

🔹 My Approach

I believe that cybersecurity is not limited to tools, but must be integrated into the entire IS. My role is to protect your data, make your infrastructures reliable, and align your IT strategy with your business objectives.

I favor a pragmatic and accessible approach that speaks to both technical teams and executives.

🔹 What I do for my clients

Cybersecurity: audits, pentests, vulnerability detection, implementation of DRP/BCP, team awareness.

Infrastructure & Cloud: server and network administration, virtualization, Docker/Kubernetes, Cloud deployment, secure backups.

Management & Governance: outsourced CISO/CTO role, definition of security policies, compliance, support for management committees.

🔹 My focus on SMEs / Mid-sized Companies

SMEs and mid-sized companies face the same threats as large corporations, but with fewer resources. My goal is to provide them with:

concrete solutions adapted to their size,

human and accessible support,

a global vision covering both technical and strategic aspects.

🔹 My added value

15 years of experience in cyber & infra, from the field to the CTO role.

A hybrid profile: operational (security, servers, networks) and strategic (IS management, governance).

An ability to translate technical complexity into clear and actionable decisions for executives.

👉 My ambition with CyberConsulting: to enable SMEs and mid-sized companies to operate in reliable, secure, and sustainable environments, by leveraging best practices usually reserved for large enterprises.

I held the position of CISO from 2017 to 2020. I supported several companies (SMEs, mid-sized companies, associations) on a part-time basis, managing their entire information system while integrating a strong cybersecurity component.

🔹 Infrastructure & Administration

Administration and supervision of Windows and Linux servers.

Deployment and migration of user workstations.

Design and installation of complete networks (racks, switches, cabling, UPS, Wi-Fi).

Multi-site management and interconnections.

Fixed, mobile, IP, and PSTN telephony.

Implementation and monitoring of DRP/BCP, backups (Veeam, Acronis).

🔹 Cybersecurity

Securing servers, workstations, and environments (AD, GPO, hardening).

Deployment and management of firewalls (Stormshield, Zyxel), VLAN segmentation.

Vulnerability detection and management solutions (Rapid7, supervision).

Tested data protection and DRP.

User awareness and security support.

🔹 Management & Support

Intervention as ASR or CISO depending on clients.

Collaboration with general and financial management to align IS strategy.

Supplier relations (Microsoft, Dell, HP, Lenovo, Stormshield, telecom operators) and service provider management.

🔹 Added Value

I contributed to modernizing, securing, and making reliable the infrastructures of organizations such as Santé Pro, Eden Games, Cyclable, SIPAREX, IPP, OPHEOR, CIDFF, Digitalisim.

My role combined technical expertise (administration, security, networks) and strategic vision (governance, management committee support).

At Global IP System, I managed the technical aspects and IT outsourcing for a portfolio of over 300 clients (SMEs, associations, hospitality sector, etc.), with a role combining systems & network administration, security, and team management.

🔹 Main Missions

Complete IT outsourcing: installation, configuration, migration, and maintenance of IT parks (PCs, servers, Canon printing solutions).

Systems & Network Administration: Windows, Linux servers, Active Directory, virtualization (VMware, Hyper-V), network cabling, and supervision.

Infrastructure Security: management of firewalls (Stormshield, Zyxel), antivirus solutions (Kaspersky, Trend, Nod32), secure email systems (Office 365, Exchange, Zimbra).

Low-voltage and audiovisual systems: installation of video surveillance, TV, and projector solutions.

Business software: installation, training, and support (hospitality management/accounting, Autodesk, Perforce, specialized software).

🔹 Management & Leadership

Technical department management: supervision of the support team, recruitment, and scheduling.

Client relations and reporting: technical follow-up, strategic support, building trust with SME decision-makers.

🔹 Results / Added Value

Improved security and reliability of client environments through modernized infrastructures.

Development of a proactive approach in supervision and preventive maintenance.

Implementation of solutions tailored to business needs (DRP, backups, network security).

Solid experience in systems and infrastructure security, foreshadowing my current cybersecurity focus.