The Information Analysis and Infrastructure Protection directorate assesses vulnerabilities to terrorist attacks in the United States. This directorate is also responsible for disseminating accurate information about terrorist threats to federal, state, local, private, and international entities. The three bodies that carry out these missions are the Homeland Security Operations Center, Information Analysis, and Infra-structure Protection.

Information disseminated by the Information Analysis and Infrastructure Protection directorate is probably the most widely identified by the general public due to the public’s familiarity with the color-coded terrorist warnings. This warning system, which consists of five levels representing the severity of the threat of terrorism, are frequently displayed on news broadcasts, in the print media, and on the Internet.