diff --git a/src/main/java/org/capstone/maru/config/JpaConfig.java b/src/main/java/org/capstone/maru/config/JpaConfig.java
index 59ff2d6f20..edf60c52c1 100644
--- a/src/main/java/org/capstone/maru/config/JpaConfig.java
+++ b/src/main/java/org/capstone/maru/config/JpaConfig.java
@@ -6,6 +6,9 @@
 import org.springframework.data.domain.AuditorAware;
 import org.springframework.data.jpa.repository.config.EnableJpaAuditing;
 
+/**
+ * login 구현시 tester -> name 변경
+ */
 @EnableJpaAuditing
 @Configuration
 public class JpaConfig {
diff --git a/src/main/java/org/capstone/maru/config/SecurityConfig.java b/src/main/java/org/capstone/maru/config/SecurityConfig.java
index eb8fcfdb54..3616a684a5 100644
--- a/src/main/java/org/capstone/maru/config/SecurityConfig.java
+++ b/src/main/java/org/capstone/maru/config/SecurityConfig.java
@@ -2,10 +2,7 @@
 
 
 import lombok.extern.slf4j.Slf4j;
-import org.capstone.maru.security.CustomOAuth2UserService;
-import org.capstone.maru.security.KakaoOAuth2Response;
-import org.capstone.maru.security.SharedPostPrincipal;
-import org.capstone.maru.service.MemberAccountService;
+import org.capstone.maru.security.service.CustomOAuth2UserService;
 import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
 import org.springframework.boot.autoconfigure.security.servlet.PathRequest;
 import org.springframework.context.annotation.Bean;
@@ -13,12 +10,6 @@
 import org.springframework.http.HttpMethod;
 import org.springframework.security.config.annotation.web.builders.HttpSecurity;
 import org.springframework.security.config.annotation.web.configuration.WebSecurityCustomizer;
-import org.springframework.security.crypto.factory.PasswordEncoderFactories;
-import org.springframework.security.crypto.password.PasswordEncoder;
-import org.springframework.security.oauth2.client.userinfo.DefaultOAuth2UserService;
-import org.springframework.security.oauth2.client.userinfo.OAuth2UserRequest;
-import org.springframework.security.oauth2.client.userinfo.OAuth2UserService;
-import org.springframework.security.oauth2.core.user.OAuth2User;
 import org.springframework.security.web.SecurityFilterChain;
 
 @Slf4j
@@ -29,7 +20,7 @@ public class SecurityConfig {
     @ConditionalOnProperty(name = "spring.h2.console.enabled", havingValue = "true")
     public WebSecurityCustomizer configureH2ConsoleEnable() {
         return web -> web.ignoring()
-                         .requestMatchers(PathRequest.toH2Console());
+            .requestMatchers(PathRequest.toH2Console());
     }
 
     @Bean
@@ -58,43 +49,4 @@ public SecurityFilterChain securityFilterChain(
             )
             .build();
     }
-
-    @Bean
-    public OAuth2UserService<OAuth2UserRequest, OAuth2User> oAuth2UserService(
-        MemberAccountService memberAccountService,
-        PasswordEncoder passwordEncoder
-    ) {
-        final DefaultOAuth2UserService delegate = new DefaultOAuth2UserService();
-
-        return userRequest -> {
-            OAuth2User oAuth2User = delegate.loadUser(userRequest);
-
-            KakaoOAuth2Response kakaoOAuthResponse = KakaoOAuth2Response.from(
-                oAuth2User.getAttributes());
-
-            String registrationId = userRequest.getClientRegistration()
-                                               .getRegistrationId(); // "kakao"
-
-            String providerId = String.valueOf(kakaoOAuthResponse.id());
-            String memberId = registrationId + "_" + providerId;
-
-            return memberAccountService
-                .searchMember(memberId)
-                .map(SharedPostPrincipal::from)
-                .orElseGet(() ->
-                    SharedPostPrincipal.from(
-                        memberAccountService.saveUser(
-                            memberId,
-                            kakaoOAuthResponse.email(),
-                            kakaoOAuthResponse.nickname()
-                        )
-                    )
-                );
-        };
-    }
-
-    @Bean
-    public PasswordEncoder passwordEncoder() {
-        return PasswordEncoderFactories.createDelegatingPasswordEncoder();
-    }
 }
diff --git a/src/main/java/org/capstone/maru/controller/MainController.java b/src/main/java/org/capstone/maru/controller/MainController.java
index 9568c0afc1..1888aacd0c 100644
--- a/src/main/java/org/capstone/maru/controller/MainController.java
+++ b/src/main/java/org/capstone/maru/controller/MainController.java
@@ -1,6 +1,6 @@
 package org.capstone.maru.controller;
 
-import org.capstone.maru.security.SharedPostPrincipal;
+import org.capstone.maru.security.principal.SharedPostPrincipal;
 import org.springframework.security.core.annotation.AuthenticationPrincipal;
 import org.springframework.web.bind.annotation.GetMapping;
 import org.springframework.web.bind.annotation.RestController;
@@ -10,7 +10,7 @@ public class MainController {
 
     @GetMapping("/")
     public String root() {
-        return "home";
+        return "health check";
     }
 
     @GetMapping("/test")
diff --git a/src/main/java/org/capstone/maru/security/constant/SocialType.java b/src/main/java/org/capstone/maru/security/constant/SocialType.java
index 87e43377da..3ef5283a2d 100644
--- a/src/main/java/org/capstone/maru/security/constant/SocialType.java
+++ b/src/main/java/org/capstone/maru/security/constant/SocialType.java
@@ -12,14 +12,11 @@ public enum SocialType {
     private final String key;
 
     public static SocialType of(String registrationId) {
-        switch (registrationId) {
-            case "kakao":
-                return SocialType.KAKAO;
-            case "naver":
-                return SocialType.NAVER;
-            default:
-                throw new IllegalArgumentException(
-                    "Unsupported social registrationId: " + registrationId);
-        }
+        return switch (registrationId) {
+            case "kakao" -> SocialType.KAKAO;
+            case "naver" -> SocialType.NAVER;
+            default -> throw new IllegalArgumentException(
+                "Unsupported social registrationId: " + registrationId);
+        };
     }
 }
diff --git a/src/main/java/org/capstone/maru/security/principal/SharedPostPrincipal.java b/src/main/java/org/capstone/maru/security/principal/SharedPostPrincipal.java
index 852c6c3301..2afcc603d6 100644
--- a/src/main/java/org/capstone/maru/security/principal/SharedPostPrincipal.java
+++ b/src/main/java/org/capstone/maru/security/principal/SharedPostPrincipal.java
@@ -1,4 +1,4 @@
-package org.capstone.maru.security;
+package org.capstone.maru.security.principal;
 
 import java.util.Collection;
 import java.util.Map;
diff --git a/src/main/java/org/capstone/maru/security/response/KakaoOAuth2Response.java b/src/main/java/org/capstone/maru/security/response/KakaoOAuth2Response.java
index 92db7d47bd..a9502a1784 100644
--- a/src/main/java/org/capstone/maru/security/response/KakaoOAuth2Response.java
+++ b/src/main/java/org/capstone/maru/security/response/KakaoOAuth2Response.java
@@ -1,4 +1,4 @@
-package org.capstone.maru.security;
+package org.capstone.maru.security.response;
 
 import java.time.LocalDateTime;
 import java.time.ZoneId;
diff --git a/src/main/java/org/capstone/maru/security/response/NaverOAuth2Response.java b/src/main/java/org/capstone/maru/security/response/NaverOAuth2Response.java
index b645401b3d..44b1b19c98 100644
--- a/src/main/java/org/capstone/maru/security/response/NaverOAuth2Response.java
+++ b/src/main/java/org/capstone/maru/security/response/NaverOAuth2Response.java
@@ -1,4 +1,4 @@
-package org.capstone.maru.security;
+package org.capstone.maru.security.response;
 
 import java.util.Map;
 import lombok.Getter;
diff --git a/src/main/java/org/capstone/maru/security/response/OAuth2Response.java b/src/main/java/org/capstone/maru/security/response/OAuth2Response.java
index 88c1c49456..4e11e4c4be 100644
--- a/src/main/java/org/capstone/maru/security/response/OAuth2Response.java
+++ b/src/main/java/org/capstone/maru/security/response/OAuth2Response.java
@@ -1,4 +1,4 @@
-package org.capstone.maru.security;
+package org.capstone.maru.security.response;
 
 import java.util.Map;
 import lombok.Getter;
@@ -11,7 +11,7 @@ public abstract class OAuth2Response {
     /**
      * SocialType에 맞는 메소드 호출하여 OAuthAttributes 객체 반환 파라미터 : userNameAttributeName -> OAuth2 로그인 시
      * 키(PK)가 되는 값 / attributes : OAuth 서비스의 유저 정보들 소셜별 of 메소드(ofGoogle, ofKaKao, ofNaver)들은 각각 소셜
-     * 로그인 API에서 제공하는 회원의 식별값(id), attributes, nameAttributeKey를 저장 후 build
+     * 로그인 API에서 제공하는 회원의 식별값(id), attributes, nameAttributeKey를 저장 후 build 필드가 들어갈 수 있을거 같은데
      */
     public static OAuth2Response of(
         SocialType socialType,
diff --git a/src/main/java/org/capstone/maru/security/service/CustomOAuth2UserService.java b/src/main/java/org/capstone/maru/security/service/CustomOAuth2UserService.java
index 5b0a0d65ab..df4566e29d 100644
--- a/src/main/java/org/capstone/maru/security/service/CustomOAuth2UserService.java
+++ b/src/main/java/org/capstone/maru/security/service/CustomOAuth2UserService.java
@@ -1,6 +1,8 @@
-package org.capstone.maru.security;
+package org.capstone.maru.security.service;
 
 import lombok.RequiredArgsConstructor;
+import org.capstone.maru.security.response.OAuth2Response;
+import org.capstone.maru.security.principal.SharedPostPrincipal;
 import org.capstone.maru.security.constant.SocialType;
 import org.capstone.maru.service.MemberAccountService;
 import org.springframework.security.oauth2.client.userinfo.DefaultOAuth2UserService;