You can find this article on: http://redmine.backtrack-linux.org:8080/issues/290
Joomscan Security Scanner updated recently with new database have 550 vulnerabilities. Detects file inclusion, sql injection, command execution vulnerabilities of a target Joomla web site. Last update for this tool was in August, 2009 with 466 vulnerabilities. now with the new ver this tool got 550 vulnerabilities.