South Korea\'s military has exposed serious loopholes in its information security management system, as its top organizations failed to share information on blacklisted figures, a ruling party lawmaker insisted Sunday. Rep. Kim Hak-song of the ruling Grand National Party said that the Joint Chiefs of Staff (JCS) had allowed a South Korean man blacklisted by the Defense Security Command (DSC) to frequently visit JSC buildings to participate in the construction of an integrated military computer network.