The organization is an information sharing and analysis effort serving the interests, and combining the knowledge base of, a wide range of private sector and government members.

[3] Since 2003, InfraGard Alliances and the FBI said that they have developed a TRUST-based public-private sector partnership to ensure reliability and integrity of information exchanged about various terrorism, intelligence, criminal, and security matters.

[3][5] InfraGard chapters participate to assure that the critical infrastructure owners and operators—estimated at 85% private sector—are engaged and represented in local and regional planning efforts.

InfraGard approaches threats to critical infrastructure from both a tactical and strategic level, addressing the needs of those on the front lines of security as well as those decision makers tasked with assessing their enterprise's vulnerabilities and allocating resources to protect it.

[8] The information sharing between the organization and government has been criticized by those protecting civil liberties, concerned the membership would be surrogate eyes and ears for the FBI.

[10] Local chapters regularly meet to discuss the latest threats or listen to talks from subject matter experts on security issues,[11] with membership open to U.S. citizens at no cost.

"[9][11] While others describing Infragard state "the architecture of the Internet—and the many possible methods of attack— requires governments, corporations, and private parties to work together to protect network security and head off threats before they occur.

"[11] In 2011, LulzSec claimed responsibility for attacking chapter websites managed by local members in Connecticut and Atlanta, in order to embarrass the FBI with "simple hacks".