CBRN Intelligence and Information Sharing Act of 2015

CBRN Intelligence and Information Sharing Act of 2015 Amends the Homeland Security Act of 2002 to direct the Office of Intelligence and Analysis of the Department of Homeland Security (DHS) to: (1) support homeland security-focused intelligence analysis of terrorist actors, their claims, and their plans to conduct attacks involving chemical, biological, radiological, and nuclear materials against the nation and of global infectious disease, public health, food, agricultural, and veterinary issues; (2) support homeland security-focused risk analysis and risk assessments of such homeland security hazards by providing relevant quantitative and nonquantitative threat information; (3) leverage homeland security intelligence capabilities and structures to enhance prevention, protection, response, and recovery efforts with respect to a chemical, biological, radiological, or nuclear attack; and (4) share information and provide tailored analytical support on these threats to state, local, and tribal authorities as well as other national biosecurity and biodefense stakeholders. Requires the Office to coordinate with other DHS components, the Intelligence Community, and federal, state, local, and tribal authorities where appropriate and enable such entities to provide recommendations on optimal information sharing mechanisms and on how they can provide information to DHS. Directs DHS to report annually on: (1) intelligence and information sharing activities to counter the threat from attacks using chemical, biological, radiological, and nuclear materials, and (2) DHS's activities in accordance with relevant intelligence strategies. Requires DHS to ensure that homeland security information analyzed by it concerning terrorist threats is provided to state, local, and private entities and the public.