+33 3 74 47 37 37contact@dyb.eu
DYB
Secure infrastructure

A healthy infrastructure is the foundation of everything.

Misconfigured Active Directory, flat network, uncontrolled access — the most exploited flaws always start with infrastructure. We design and secure it at the root.

On-premise
Our natural turf
AD · IAM
Core expertise
15 years
Cumulative practice
Audit my infrastructure →
Our DNA

Infrastructure is our natural turf.

Arthur Perrot, DYB co-founder, built critical infrastructures before starting the firm. On-premise, self-hosted, hybrid — DYB masters the real environments of SMEs, not just theoretical cloud architectures.

When others push you to migrate everything to AWS, we first ask whether that is really what you need. Often, it is not.

Arthur Perrot
Co-founder · Infrastructure
Arthur Perrot
Scope

What we secure at the infrastructure level

Active Directory management

AD hardening, rights, GPOs, service accounts, admin tiering. The foundation of any Windows environment.

Network & LAN/Wi-Fi security

Architecture, VLAN, wired and wireless access. We wire security in from the design stage.

Network segmentation

Flow segmentation by trust zone. An attacker who gets in can no longer move laterally.

Identity & access management

IAM: who accesses what, from where, and why. Named accounts, role separation.

On-premise security

Physical servers, hypervisors, storage, backups. Bare metal is not obsolete — it is demanding.

Self-hosted & internal infrastructure

Full control of your data, with no cloud dependency. Real technical sovereignty.

For whom

For organisations that want to stay in control of their IT system

SMEs with legacy infrastructure

Internal architecture built over 10–20 years, sometimes poorly documented. We pick it up, map it, stabilise it.

Sensitive sectors

Healthcare, legal, accounting, industry: critical confidentiality, strong regulatory constraints.

Public cloud sceptics

Organisations that refuse to put everything in Azure or AWS. We respect that choice and make it sustainable.

Method

How we work on your infrastructure

01

Mapping

Hardware, software, network inventory. Everything documented before we touch anything.

02

Risk analysis

Cross-referenced with ANSSI / CIS frameworks. Prioritisation by business impact.

03

Progressive hardening

In batches, no disruption. Each change validated before the next.

04

Documentation & handover

Diagrams, procedures, operations guides. You are autonomous at the end.

Your infrastructure deserves an architecture built to last.

Talk to an infrastructure expert →

They trust us

Bâtiment Agricole
CFPH
CSVPN
Digital Sun ENR
Groupe Prieur
L'Hermitage
Jet Systems
Koesio
Ministère de l'Agriculture
Ministère de l'Éducation Nationale
Muze
Prieur
Rostang
Solaire Industriel
Tetra
Vinesio
Vipus
Watch Club Business School
Winedoze
Bâtiment Agricole
CFPH
CSVPN
Digital Sun ENR
Groupe Prieur
L'Hermitage
Jet Systems
Koesio
Ministère de l'Agriculture
Ministère de l'Éducation Nationale
Muze
Prieur
Rostang
Solaire Industriel
Tetra
Vinesio
Vipus
Watch Club Business School
Winedoze
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