Defence and security

A system is judged when the link fails, not under nominal conditions.

The environment

Partitioning comes before convenience, and it is paid for at design stage.

Systems must keep working when the link goes down, and withstand the compromise of one position without anything propagating. Partitioning by sensitivity level therefore comes before convenience of use, and it is decided on the drawings: added after handover, it is paid for in cut walls, reworked cabling and replaced doors.

The response matters as much as the detection. Video surveillance, access control, intrusion, fire and supervision describe the same event seen from five angles; bought separately, they leave the operator to correlate by hand what the system should correlate for them. The aim is a traceable response, not an accumulation of equipment.

The human procedure is part of the arrangement. A post that is equipped but uncomfortable is deserted within months; an instruction written after installation adapts to the equipment rather than to the need. The threat scenarios the client considers realistic serve as the reference, and every procedure is rehearsed before the system goes into service.

Dominant constraints

What this environment imposes

A dominant constraint governs architecture, partners, equipment and method more than any list of services does.

National security and civil protection

Dominant constraintSeparation and degraded-mode operation

These systems must keep working when communications are lost, and must absorb the compromise of a single position without letting it spread. Separation by level of sensitivity takes precedence over convenience of use.

Enterprise and sensitive-site security

Dominant constraintDetection, control and verified response

Video surveillance, access control, intrusion, fire, supervision and human procedures are integrated around real threat scenarios. The goal is a traceable response, not an accumulation of equipment.

What applies

The solutions adopted in this environment

The attachment is carried by each solution, which declares for itself the environments where it applies.

Secure sites

Divisions drawn on

Expertise drawn on

Evidence

What we have delivered in this environment

Enterprise and sensitive-site security2025
Industrial group — security supervision centre
A single control room for six sites whose security systems did not talk to each other.
Sites connected
6
Threat scenarios rehearsed before commissioning
3
Reference KP-2025-002

All projects

Before committing

Questions to settle internally

An organisation that cannot answer these questions is not ready to launch the programme. Saying so is better than selling it a study.

What must keep working when the external link goes down?
Which zones require identifying an unknown person, and which only need to detect a presence?
Who operates the system day to day, and how many people are present at night?
Which threat scenarios does the client consider realistic?
How long must the site stay protected with no external power?
Who withdraws the rights of someone leaving the organisation, and within what time?

Consultations · Pre-qualifications · Partnerships

Let us discuss the actual case.

Describe the site, the dominant constraint and the deadline. We will say what requires a preliminary study and what can be committed directly.

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