An Investigation Firm That Protects Your Company’s Integrity
Established in August 1977 by a group of dedicated and experienced investigators, American Investigative Bureau is one of the oldest and most respected due diligence and background investigation firms in the United States. Our veteran‑owned and operated agency based in Tustin, California is licensed by the state’s Bureau of Security and Investigative Services.
Who We Serve
For 50 years, we have been delivering critical business intelligence to clients in the American, British and Canadian defense communities. We also serve companies in the legal, insurance, engineering, and construction industry, including international NATO defense firms through our satellite offices in Vienna, Austria and Frankfurt, Germany. Our clients include:
World-Class Human Intelligence
Although we utilize the latest investigative technology available, we have not lost sight of our most valuable asset which is our human intelligence or HUMINT. Over the years, we have developed an international network of trusted, reliable and proven agents from major cities worldwide.
Why Choose Us
With years of experience in law enforcement, military and security agencies, our seasoned investigators are second to none in the private sector and business intelligence industry. Our agents gather accurate and verifiable data from a wide range of resources including HUMINT, personal interviews, court records and propriety subscription-based data, not through simple internet sweeps.
Get in Touch
AIB is a full-service investigative firm. Learn more about our capabilities including location of witnesses, parental kidnapping, fraud, missing persons and more.