+33 (0)
53, Boulevard de la Reine 78000 Versailles - France


Our services

Discover our services related to safety – security – protection


Consultation & Ingineering

Sequentys provides its clients with tailored solutions in terms of infrastructure safety audits, project management assistance and safety plan design.


Protection of business

Sequentys provides companies and their executives with specialized assistance to address the most critical security risks.


Protection of ICT Systems

Ensure continuity of service and integrity of information systems and industrial heritage.


Prevention of security threats

Identification of decision-making and influence circuits, according to regional and international geopolitics, alliance games, and changes in local situations.


Security logistics

Our Vulnerability Assessment methodology detects weaknesses in the protection of your infrastructure.


Operational assistance & protection

Support and assistance for business travelers, expatriate staff and mobility in risk countries.


Crisis management assistance

The management of dangerous situations, sensitive or complex, requires an organization and specific capabilities to establish an inventory, make a diagnosis and propose actions to resolve the crisis.



Our training courses are offered by our clients or on a dedicated site in the Paris region adapted to more dynamic presentations.


Life support

Our Safe Logistics & Life-support offer is made in close collaboration with major partners.

Sequentys, your personalized response to safety issues

Specialized in risk management, Sequentys offers a proven approach to your security.

Year of creation
Multidisciplinary qualified consultants and experts
Trusted loyal partners
Prestige clients

The management team

For the study of projects related to the security of your interests

Franck Soreau

Franck Soreau

Sequentys's CEO
General Yves Mathian

General Yves Mathian

Associate Director

The opinions of our customers

Security Director Mining and Metallurgical Group

Sequentys has always mastered with great skill the missions entrusted to it in the fields of the protection of people (expatriates, travelers and local residents), the protection of information like that of mining, industrial and commercial installations in Europe, in Africa. and in Oceania. The executives and staff of the company Sequentys are available, listening and have a sound judgment in everyday life as in emergencies. Sequentys is a company of great confidence with which it is particularly pleasant to work for 10 years

Security Director Mining and Metallurgical Group

Safety Director Energy Group

Sequentys, a responsive partner, who understands the client’s issues, adapts, says when he knows how to do it and when he does not know and above all does what he says and says what he does

Safety Director Energy Group

Real Estate Manager Energy Sector

The “360 °” and fast understanding of our safety issues by Sequentys has allowed us to co-build a realistic safety plan that is immediately profitable for the company.

Real Estate Manager Energy Sector

Discover Sequentys

in photos...

Some references

Discover some of our references in France and abroad