The failure to share information among intelligence and law-enforcement agencies that could have warned of a planned terrorist attack was cited in investigations after Sept. 11. President Bush appointed a program manager in the national intelligence directors office last spring to develop a government Information Sharing Environment (ISE) The report did acknowledge some improvement measures that are taking place, such as the establishment of the National Counterterrorism Center, which was created to help share terrorist threat information online with thousands of federal officials.”]
Source: https://www.csoonline.com/article/2120557/gao-cites-poor-sharing-of-terror-data.html