

Clarity in Complexity
Decima is a Geneva-based, woman-led private investigation firm. We provide global investigation services, and actionable intelligence for strategic decision-making and crucial clarification. Our expertise is built on two investigative pillars: Open-Source Intelligence (OSINT) and Professional Surveillance (HUMINT).
While we are a Geneva licensed company, our international network of trusted investigators allows us to conduct or support cases across Switzerland and abroad with the same standards of discretion and legality. We work with corporate clients, law firms, and private individuals, with a commitment to discretion, accuracy, and legality.
Intelligence solutions for complex challenges
We deliver structured and objective analyses, within the legal framework of Swiss law, to meet your information needs with accuracy, efficiency, and confidentiality. Our approach transforms complex information into clear actionable intelligence.

Corporate Due Diligence
Credibility review of companies, partners, or investors.

Background & Integrity Checks
Verification of individuals’ profiles, activities, and behaviour.

Investigations
& Surveillance
Observation and documentation of real-world actions. Fraud, double employment, civil or family matters.

People & Asset
Tracing
Locate persons or identify visible assets (property, companies, vehicles).

International Intelligence
Operational strategic Intelligence for Market Entry
FAQs
Common questions about our confidential intelligence and investigation services
Decima operates globally with a primary focus on French speaking countries but alsoGreece and North Africa. However our network spans multiple continents.
Initial consultations are typically processed within 24 hours. Urgent matters receiveimmediate attention.
Initial consultations are typically processed within 24 hours. Urgent matters receive immediate attention.
We strictly adhere to Swiss legal standards. All our investigations are conducted withinlegal frameworks.
Pricing varies based on the request. We offer transparent, customized quotes after initial consultation. The first meeting is free of charge