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Following the terrorist attacks on September 11, 2001, intelligence gathered from terrorist organizations showed that there was interest in obtaining geospatial information on public infrastructure. Much of these data are freely available through municipal FTP sites where the removal or restriction of information poses concerns when weighed against the public's need and right to know. This study examined 152 municipalities and evaluated the content found on their FTP sites. The observed data were classified across sixteen economic sectors and then ranked into five sensitivity classes based on data type and attribute detail. The sensitivity ranking allowed for the creation of a "sensitivity index" that can be used to determine the type and detail of geospatial information available to the public. The conclusion examines one municipal case study as a potential model where the balance of restriction and freedom of information has been found and successfully implemented.