Sensitive Security Information

The Maritime Transportation Security Act, the Aviation Transportation Security Act, and the Homeland Security Act establish protection for Sensitive Security Information (SSI). The Transportation Security Administration (TSA) and the USCG may designate information as SSI when disclosure would:
 * Be detrimental to security; •
 * Reveal trade secrets or privileged or confidential information; or
 * Constitute an unwarranted invasion of privacy.

Parties accessing SSI must demonstrate a need to know. Holders of SSI must protect such information from unauthorized disclosure and must destroy the information when it is no longer needed. SSI protection pertains to government officials, as well as to Transportation Systems Sector owners and operators.