The InfraGard Program began in 1996 as a collaborative effort between private sector cyber professionals and the FBI field office in Cleveland, Ohio. The FBI later expanded the program to every field office in the country. In 2003 the private sector members of InfraGard formed the "InfraGard National Members Alliance" (INMA) The INMA is a non-profit Delaware LLC with 501(c)3 status. The INMA LLC is comprised of 86 separate 501(c)3 InfraGard Members Alliances (IMAs) that represent over 48,000 FBI-vetted, InfraGard Subject Matter Experts. The INMA has a dual-focus value proposition. It provides its members with unmatched opportunities to promote the physical and cyber security of their organizations through access to a trusted, national network of Subject Matter Experts from the public and private sectors. And, it provides government stakeholders, across the local, state, and Federal levels, with unmatched access to the expertise and experience of critical infrastructure owners and operators.

InfraGard Los Angeles is California Corporation with status as a 501(c)3. Its members are part of a national network of FBI-vetted volunteers who are critical infrastructure subject matter experts in one or more sectors. It provides a trusted forum for the real-time exchange of information, training and expertise related to the protection of critical infrastructure and key resources (CI/KR) from both physical and cyber threats. The Los Angeles alliance is over 2100 members strong. It is governed by a Board of Directors and is run by the Chapter Operational Management and Sector Coordinators.