Investigations and forensics since 1980
The answer you want,
the respect you deserve.
The most traditional private investigation company in Brazil. We uncover the truth through legally obtained evidence and protect our clients' interests.
Visit the Ábacus Museum · 1979–2026Please note
We do not speak English. Please communicate with us in writing, using Google Translate to Brazilian Portuguese, or feel free to hire an interpreter if that is more convenient. If you have questions about our services or any specific term, do not hesitate to ask until everything is fully clear to you.
Who we are
A family-owned business with a reputation to protect.
The most traditional private investigation company in Brazil, established in 1980 in Porto Alegre. Ábacus Detective has become the most recommended professional among lawyers and companies nationwide.
We are a legally incorporated company, issuing invoices and written service agreements. We work from a discreet office with no signage.
We do not lie, invent, omit or alter information, however great the benefit might be. Our reports are an accurate expression of the truth observed during the work.
Areas of expertise
All fields and levels of private investigation.
Criminal
In accordance with Brazilian Law 13.432/17.
Family
Family and relationship matters.
Corporate
Companies, partnerships and competition.
Medical
Healthcare-related cases and verifications.
Forensics
Expert examinations and technical assistance.
Agribusiness
Farming, production and the agricultural chain.
Industrial
Plants, processes and industrial assets.
Main services
What Ábacus does.
Person Location
Missing individuals, past relationships, relatives, witnesses, debtors, business partners and fugitives.
Asset Location
Hidden assets, identification of front persons, declared assets, companies, vehicles, properties, collectibles, non-fungible items and machinery.
Family Investigation
Child custody, domestic violence, psychological abuse, romance scams, neglect, guardianship verification, background checks, drug use, infidelity, child support disputes, animal mistreatment and false statements.
Corporate Investigation
Labor-related issues, sabotage, fraud, industrial and commercial counter-espionage, compliance, infiltration, corporate disputes and unfair competition.
Forensics / Technical Support
All forensic services with nationwide coverage — including laboratories, reconstructions and specialised or uncommon analyses.
Criminal Investigation
Homicides, theft, robbery, defensive investigations, scams, piracy and misappropriation.
3D Scene Reconstruction
Widely used by attorneys to support their legal strategies. A 3D reconstruction helps jurors understand the facts and can include full immersion through virtual-reality headsets.
Search Dogs
Trained dogs used to locate individuals or narcotics. They can determine whether someone was present at a specific location.
Methodology
Security · Discretion · Efficiency
Over more than four decades we have developed our own techniques, procedures and methods — studied, trained and refined until proven effective through experience. We use an exclusive system that delivers better results with lower risk.
We are also the only company in Brazil working to North American private-investigation standards.
Case analysis
Before any action, everything is verified and a work plan is drawn up.
Team assembly
We bring together the professionals who will act and discuss execution — only then do we proceed.
Supervised execution
Each assignment is followed step by step, with a report at the end of every stage.
Final report
Everything gathered is compiled with the evidence attached, and only then is the client informed of completion.
What you get
- Legally admissible evidence
- Reliable reports
- Relevant information
- Real solutions for complex cases
Women-focused service
Dedicated service for female clients, handled with the sensitivity and confidentiality these cases require.
More than just filming, photographing or using gadgets, we know how to conduct an investigation, and that makes all the difference.Ábacus Detective
Legal partnerships
Experts, attorneys and Ábacus Detective.
Our clients deserve the best solutions, delivered by efficient and committed professionals. We maintain commercial partnerships with forensic experts and attorneys throughout Brazil.
Our mission
To make the truth visible.
To uncover the truth through legally obtained evidence and protect our clients' interests.
To elevate the standard of private investigation, maintain our high-quality service and reinforce our role as a reliable alternative for society. We serve both individuals and corporations.
Talk to a firm that has been investigating for over 46 years.
First contact is confidential and carries no obligation. Tell us what you need and we will say honestly whether we can help.