Transportation Security Information Sharing Environment

Overview
The Transportation Security Information Sharing Environment (TSISE) is designed to establish a foundation for sharing transportation security–related information among public and private entities that have a stake in protecting the nation's transportation system. While multiple DHS components are responsible for information sharing, the Transportation Security Administration (TSA) is the department lead on providing transportation security–related information to other DHS components and public and private stakeholders, including owners and operators of critical transportation infrastructure.