diff --git a/src/main/java/com/easyvel/server/config/security/BaseAccessDeniedHandler.java b/src/main/java/com/easyvel/server/config/security/BaseAccessDeniedHandler.java
index f00f8be..75e83cd 100644
--- a/src/main/java/com/easyvel/server/config/security/BaseAccessDeniedHandler.java
+++ b/src/main/java/com/easyvel/server/config/security/BaseAccessDeniedHandler.java
@@ -18,7 +18,6 @@ public class BaseAccessDeniedHandler implements AccessDeniedHandler {
 
     @Override
     public void handle(HttpServletRequest request, HttpServletResponse response, AccessDeniedException exception) throws IOException {
-        ObjectMapper objectMapper = new ObjectMapper();
         LOGGER.info("[commence] 인가 실패로 response.sendError 발생");
 
         DefaultResponse defaultResponse = new DefaultResponse("권한이 없습니다.");
diff --git a/src/main/java/com/easyvel/server/config/security/BaseAuthenticationEntryPoint.java b/src/main/java/com/easyvel/server/config/security/BaseAuthenticationEntryPoint.java
index 534f55b..6451557 100644
--- a/src/main/java/com/easyvel/server/config/security/BaseAuthenticationEntryPoint.java
+++ b/src/main/java/com/easyvel/server/config/security/BaseAuthenticationEntryPoint.java
@@ -21,10 +21,8 @@ public class BaseAuthenticationEntryPoint implements AuthenticationEntryPoint {
 
     @Override
     public void commence(HttpServletRequest request, HttpServletResponse response, AuthenticationException ex) throws IOException {
-        ObjectMapper objectMapper = new ObjectMapper();
         LOGGER.info("[commence] 인증 실패로 response.sendError 발생");
 
-
         DefaultResponse defaultResponse = new DefaultResponse("인증이 실패하였습니다.");
         defaultResponse.setResponse(response, HttpStatus.UNAUTHORIZED);
     }
diff --git a/src/main/java/com/easyvel/server/config/security/BaseUserDetailsService.java b/src/main/java/com/easyvel/server/config/security/BaseUserDetailsService.java
new file mode 100644
index 0000000..d0232e0
--- /dev/null
+++ b/src/main/java/com/easyvel/server/config/security/BaseUserDetailsService.java
@@ -0,0 +1,35 @@
+package com.easyvel.server.config.security;
+
+import com.easyvel.server.sign.User;
+import com.easyvel.server.sign.UserRepository;
+import lombok.RequiredArgsConstructor;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.security.core.userdetails.UserDetails;
+import org.springframework.security.core.userdetails.UserDetailsService;
+import org.springframework.security.core.userdetails.UsernameNotFoundException;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+
+import java.util.Optional;
+
+@RequiredArgsConstructor
+@Service
+@Transactional
+public class BaseUserDetailsService implements UserDetailsService {
+
+    private final Logger LOGGER = LoggerFactory.getLogger(UserRepository.class);
+
+    private final UserRepository userRepository;
+
+    @Override
+    public UserDetails loadUserByUsername(String username) {
+        LOGGER.info("[loadUserByUsername] loadUserByUsername 수행. username : {}", username);
+        Optional<User> optionalMember = userRepository.getByUid(username);
+        if (optionalMember.isEmpty())
+            throw new UsernameNotFoundException(username);
+
+        UserDetails userDetails = userRepository.getByUid(username).get();
+        return userDetails;
+    }
+}
diff --git a/src/main/java/com/easyvel/server/config/PasswordEncoderConfiguration.java b/src/main/java/com/easyvel/server/config/security/PasswordEncoderConfiguration.java
similarity index 91%
rename from src/main/java/com/easyvel/server/config/PasswordEncoderConfiguration.java
rename to src/main/java/com/easyvel/server/config/security/PasswordEncoderConfiguration.java
index dc803c7..315a0ca 100644
--- a/src/main/java/com/easyvel/server/config/PasswordEncoderConfiguration.java
+++ b/src/main/java/com/easyvel/server/config/security/PasswordEncoderConfiguration.java
@@ -1,4 +1,4 @@
-package com.easyvel.server.config;
+package com.easyvel.server.config.security;
 
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
diff --git a/src/main/java/com/easyvel/server/sign/SignController.java b/src/main/java/com/easyvel/server/sign/SignController.java
index 94adb5a..c14f23b 100644
--- a/src/main/java/com/easyvel/server/sign/SignController.java
+++ b/src/main/java/com/easyvel/server/sign/SignController.java
@@ -89,8 +89,8 @@ public String signIn(
     }
 
     @EasyvelTokenApiImplicitParams
-    @PostMapping("/sign-out")
-    public void signOut(@RequestHeader("X-AUTH-TOKEN") String token) throws SignException {
+    @DeleteMapping(value = "/sign-out")
+    public void signOut(@RequestHeader(SecurityConfiguration.TOKEN_HEADER) String token) throws SignException {
         String uid = jwtTokenProvider.getUid(token);
         LOGGER.info("[signIn] 회원탈퇴를 시도하고 있습니다. id : {}, pw : ****", uid);