diff --git a/topology/Korea Institute of Science and Technology Information/T3_KR_KISTI/T3_KR_KISTI.yaml b/topology/Korea Institute of Science and Technology Information/T3_KR_KISTI/T3_KR_KISTI.yaml
index ea975d377..243a7cfb7 100644
--- a/topology/Korea Institute of Science and Technology Information/T3_KR_KISTI/T3_KR_KISTI.yaml	
+++ b/topology/Korea Institute of Science and Technology Information/T3_KR_KISTI/T3_KR_KISTI.yaml	
@@ -12,15 +12,15 @@ Resources:
           ID: 941eaf1c521eceb1c2858e949aa6e4afdd096599
           Name: Geonmo Ryu
         Secondary:
-          ID: f19765ab94943fcfa470308c6ad0df06c1aa30f8
-          Name: Seoyoung Roh
+          ID: 5046620531f5b7cc0d89aec6bb0ea30c738bbbb2
+          Name: Sangwook Bae
       Security Contact:
         Primary:
           ID: 941eaf1c521eceb1c2858e949aa6e4afdd096599
           Name: Geonmo Ryu
         Secondary:
-          ID: f19765ab94943fcfa470308c6ad0df06c1aa30f8
-          Name: Seoyoung Roh
+          ID: 5046620531f5b7cc0d89aec6bb0ea30c738bbbb2
+          Name: Sangwook Bae
     Description: kisti cm-squid
     FQDN: cms-squid.sdfarm.kr
     ID: 690
@@ -77,15 +77,15 @@ Resources:
           ID: 941eaf1c521eceb1c2858e949aa6e4afdd096599
           Name: Geonmo Ryu
         Secondary:
-          ID: b8831170b8f9b26f6bab78befb2c463e406c396f
-          Name: Seo-Young Noh
+          ID: 5046620531f5b7cc0d89aec6bb0ea30c738bbbb2
+          Name: Sangwook Bae
       Security Contact:
         Primary:
           ID: 941eaf1c521eceb1c2858e949aa6e4afdd096599
           Name: Geonmo Ryu
         Secondary:
-          ID: b8831170b8f9b26f6bab78befb2c463e406c396f
-          Name: Seo-Young Noh
+          ID: 5046620531f5b7cc0d89aec6bb0ea30c738bbbb2
+          Name: Sangwook Bae
     Description: |-
       KISTI_CMS_T3_SE
       cms-se.sdfarm.kr