If you’re already delving into the exciting new world of Panther, the 10.3 release of Mac OS X, then you’ll want to know that Apple’s released a security update for the Terminal.app program itself, as detailed:
Security Update 2003-11-04 addresses a potential vulnerability with the Terminal application in Mac OS X v10.3 and Mac OS X Server v10.3 that could allow unauthorized access to a system.