Cyber Security Office
Steer your cyber, data and AI risk at the EXCO level — with a defensible 90-day plan.
Deliverable · EXCO Report + 90-day Plan
Secure, govern and industrialize enterprise AI.
Yellowsys brings Cyber leadership, reliable Data foundations and AI execution into one decision framework, strengthened by our proprietary YellowMind platform.
100+
Data, AI & cybersecurity experts
15%
of revenue in security R&D
100%
Capital independence
Our Services
Three services, one standard
02 ·
Data Foundations
Governed, auditable, AI-ready data foundations.
We design and secure data foundations: platforms, catalogs, lineage, data quality and access controls to support analytical, regulatory and AI use cases.
- Secure cloud-native architecture
- Data catalog, lineage and ownership
- Granular access control policy
- Quality, reliability and observability of data flows
03 ·
AI Labs
Industrialize generative and agentic AI — with the repeatability and guardrails that reassure the EXCO.
We frame, prototype and secure your AI use cases: copilots, agents, RAG and agentic workflows, with a level of guardrails and repeatability fit for production.
- Secure RAG architecture
- Agentic workflows & multi-agent orchestration
- Evaluation, testing and repeatability of outputs
- Guardrails, human-in-the-loop & audit trail
Case Studies
Measurable results
Big 4 — Finance/Audit
AI Act
Compliance of AI review processes
Securing the decision-making system and deploying an AI solution dedicated to regulatory compliance review, with a full AI Act audit.
Pathé Gaumont — Media
GDPR
Decision-making system & data governance
Modernization of the BI system with strengthened data governance and validated GDPR compliance for audience data.
Sodexo — Retail
Security
Centralized & secure data architecture
Rollout of a centralized data architecture with encryption, granular access control and security by design.
Leading teams trust us with their critical transformation challenges.
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YellowMind
The governed AI accelerator behind our engagements, deployable as white label.
Our proprietary platform accelerates client engagements and can be deployed as white label. It brings specialized agents, internal data, reusable workflows and governance controls into one environment.
- Specialized AI agents
- Agentic workflows
- Data rooms & RAG
- Access governance
- Audit trail & supervision
- Human validation
YellowMind Platform
1,500+
agents created
5,000+
workflows executed
Sources
RAG
Agents
Playbooks
Audit
From scoping to an operational capability.
Since 2018, our teams in France and Tunisia have brought Cyber, Data and AI into one execution path.
01Scope
Decide on clear foundations
Business goals, risks, data, ownership and success criteria are aligned before execution.
02Prove
Build and secure
We deliver the target foundation or useful prototype with the controls required for validation.
03Industrialize
Deploy and govern
Architecture, adoption, supervision and governance turn the result into an operational capability.
Turn the next critical decision into an actionable scope.
Share your context, risks and use case. Together, we will identify the most useful next engagement.