Alexandre Ribeiro – Certified Private Investigator
LIDEPPE | IKD | APDPE
24/7 Confidentiality
Private Investigators in Portugal Confidentiality, Ethics, and Legal Evidence
Concrete results in marital, business, and locating people cases. We operate in Lisbon, Porto, and throughout the country 24/7
Private Investigators in Portugal : Specialists in High-Trust Investigations
If you are looking for discretion, rigor and concrete evidence, our network of private detectives in Portugal offers professional investigation solutions throughout the country and the autonomous regions of the islands.
With a consolidated presence from north to south , we guarantee unprecedented national coverage, operating with maximum confidentiality through our investigation agencies in the North, in the Center and in the South.
We operate strictly within the Portuguese legal framework in all private investigation services in Portugal, ensuring solid results anywhere in the country.
We centralize our highly complex operations around three strategic areas of action and legal evidence gathering. If you require an intervention under absolute secrecy in the capital and surrounding areas, consult our private detective agency in Lisbon .
For investigations focused on the large business and residential hub in the north, we work directly with private detectives in Porto . If your case requires movement monitoring or audits on the southern coast, we cover the entire region through our private detectives in the Algarve .
Choose your region and guarantee results admissible in court.
Alexandre Ribeiro : A Life Dedicated to Private Investigation
Private investigation is not just my profession; it's my legacy. I grew up observing the mastery of my father, one of the pioneers of private investigation in Portugal, at a time when the digital world didn't exist and the success of a case depended exclusively on shrewdness, patience, and newspaper footnotes in advertisements.
It was in this environment of discretion and rigor that I honed my instincts. I began my journey in 2001 , at just 16 years old, learning the art of surveillance and intelligence gathering "the old-fashioned way" —where precision was the only rule.
Private Investigation Services
We operate in 11 types of service
We operate in throughtout the whole country across four areas of technical specialization . Our 11 services are structured into 4 types of investigations, guaranteeing solid evidence and the strictest professional confidentiality throughout the country. You can choose the one that best suits your situation here.
Private Investigation
Cases of marital infidelity, child custody, and questionable behavior requiring discreet surveillance.
Asset Investigation
Locating assets, hidden assets, and debtors for legal proceedings and inheritances.
Business Intelligence
Employee investigations, unfair competition, internal theft, and industrial counter-espionage.
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Technological Investigations
Detection of wiretaps, hidden cameras, and digital forensics on mobile devices and computers.
Why choose our private investigators in Portugal?
Total Geographic Coverage
We operate in all districts and autonomous regions.
Cutting-edge technology
We utilize the most advanced technological resources available in the research market.
Absolute Confidentiality
Your anonymity is our number one priority.
Detailed Reports
Delivery of documentary and digital evidence valid for informational or judicial purposes.
Don't leave your questions unanswered. Contact the best private investigators in Portugal today and regain your peace of mind with a professional, fast and effective investigation .
Credibility and International Recognition
My clients' trust is underpinned by my absolute commitment to ethics and legality . I am Partner No. 33 of LIDEPEE (League of Professional Private Detectives of Portugal) , one of the oldest and most respected institutions in the sector.
Through LIDEPEE, I am also an integral member of the IKD (Internationale Kommission der Detektiv-Verbände), the prestigious International Federation of Private Detective Associations . This international recognition allows me to operate with a global network of contacts, guaranteeing support in cross-border investigations with the highest quality standards.
Reinforcing our commitment to excellence and representation in the sector, we have now joined APDPE (Professional Association of Private Detectives of Spain) under membership number 1326. This association further expands our operational capacity and the exchange of specialized knowledge, consolidating our strategic position in the Iberian market and continuously raising the standards of rigor and professionalism that we apply to each investigation.
Member No. 33 of LIDEPP
League of Professional Private Detectives of Portugal
Membro IKD
International Federation of Private Detective Associations
Member No. 33 of LIDEPP
League of Professional Private Detectives of Portugal
Recognition and Professional Ethics in Social Communication
Should private detectives be legalized? Elementary, my dear Watson.
Private Investigator Alexandre Ribeiro
Should private detectives be legalized? Elementary, my dear Watson" — This was the motto of the interview given by Detective Alexandre Ribeiro to TSF Rádio Notícias, where he addressed the importance of rigor, legality, and transparency in the private investigation sector in Portugal.
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Source of Information: Jornal Nacional TVI
As investigative specialists, discretion is our fundamental principle. We neither intend nor should we appear on television; we prioritize anonymity to preserve the effectiveness of our field operations—which is where we are truly useful and important to our clients.
However, our technical expertise makes us a benchmark in the sector. This often leads us to be a source of information for national television channels, as happened in this TVI report, which cites data and experience from the company Detetives Privados Portugal.
Trust is built on results and confidentiality , not on exposure.
Real results and guaranteed satisfaction with complete professional confidentiality.
At Private Detectives Portugal , our reputation is based on absolute discretion and the success of our investigations . These testimonials (with identities protected in accordance with the GDPR ) reflect our commitment throughout the country . We act with the same rigor in cases of marital infidelity, family surveillance , and highly complex corporate investigations .
See some of the testimonials below.
Gaia Testimony
Business Security Consulting
Testimony Algarve
Data Monitoring and Protection
Testimony Lisbon
Locating People and Assets
Porto Testimony
Private Investigators Portugal
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