diff --git a/projects/ucap-webmessenger-app/src/app/layouts/messenger/components/messages.component.ts b/projects/ucap-webmessenger-app/src/app/layouts/messenger/components/messages.component.ts
index a1dc1dac..b3cca3fc 100644
--- a/projects/ucap-webmessenger-app/src/app/layouts/messenger/components/messages.component.ts
+++ b/projects/ucap-webmessenger-app/src/app/layouts/messenger/components/messages.component.ts
@@ -682,7 +682,7 @@ export class MessagesComponent implements OnInit, OnDestroy, AfterViewInit {
         req: {
           roomSeq: this.roomInfoSubject.value.roomSeq,
           eventType: EventType.Character,
-          sentMessage: message
+          sentMessage: StringUtil.escapeHtml(message)
         }
       })
     );
@@ -717,7 +717,7 @@ export class MessagesComponent implements OnInit, OnDestroy, AfterViewInit {
     const stickerJson: StickerEventJson = {
       name: '스티커',
       file: this.selectedSticker.index,
-      chat: !!message ? message.trim() : ''
+      chat: !!message ? StringUtil.escapeHtml(message.trim()) : ''
     };
     this.store.dispatch(
       EventStore.send({
@@ -750,7 +750,7 @@ export class MessagesComponent implements OnInit, OnDestroy, AfterViewInit {
   /** Send Translation message */
   sendMessageOfTranslate(message: string) {
     const destLocale = this.destLocale;
-    const original = message;
+    const original = StringUtil.escapeHtml(message);
     const roomSeq = this.roomInfoSubject.value.roomSeq;
 
     if (!!this.isTranslationProcess) {
diff --git a/projects/ucap-webmessenger-ui-chat/src/lib/components/message-box/text.component.html b/projects/ucap-webmessenger-ui-chat/src/lib/components/message-box/text.component.html
index 3c2db106..e9f7a85f 100644
--- a/projects/ucap-webmessenger-ui-chat/src/lib/components/message-box/text.component.html
+++ b/projects/ucap-webmessenger-ui-chat/src/lib/components/message-box/text.component.html
@@ -1,3 +1,3 @@
 <div class="bubble-main">
-  <span [innerHTML]="message.sentMessage | linky"></span>
+  <span [innerHTML]="message.sentMessage | linky | ucapSafeHtml"></span>
 </div>