This is the final report of the National Institute of Standards and Technology (NIST) investigation of the collapse of the World Trade Center (WTC) towers, conducted under the National Construction Safety Team Act.

This report presents findings of a workshop featuring representatives of Internet Service Providers and others with access to data and insights about how the Internet performed on and immediately after the September 11 attacks. People who design and operate networks were asked to share data and their own preliminary analyses among participants in a closed workshop. They and networking researchers evaluated these inputs to synthesize lessons learned and derive suggestions for improvements in technology, procedures, and, as appropriate, policy.

This book is devoted primarily to papers prepared by American and Russian specialists on cyber terrorism and urban terrorism. It also includes papers on biological and radiological terrorism from the American and Russian perspectives. Of particular interest are the discussions of the hostage situation at Dubrovko in Moscow, the damge inflicted in New York during the attacks on 9/11, and Russian priorities in addressing cyber terrorism.

At 5:20 in the afternoon on 9/11, Building 7 of the World Trade Center collapsed, even though it had not been struck by a plane and had fires on only a few floors. The reason for its collapse was considered a mystery. In August 2008, NIST (the National Institute of Standards and Technology) issued its report on WTC 7, declaring that "the reason for the collapse of World Trade Center 7 is no longer a mystery" and that “science is really behind what we have said.” Showing that neither of these claims is true, David Ray Griffin demonstrates that NIST is guilty of the most serious types of scientific fraud: fabricating, falsifying, and ignoring evidence. He also shows that NIST’s report left intact the central mystery: How could a building damaged by fire—not explosives—have come down in free fall?