diff --git a/src/main/java/KGUcapstone/OutDecision/global/security/config/SecurityConfig.java b/src/main/java/KGUcapstone/OutDecision/global/security/config/SecurityConfig.java
index 9f9894a..49fab4f 100644
--- a/src/main/java/KGUcapstone/OutDecision/global/security/config/SecurityConfig.java
+++ b/src/main/java/KGUcapstone/OutDecision/global/security/config/SecurityConfig.java
@@ -11,11 +11,11 @@
 import org.springframework.context.annotation.Configuration;
 import org.springframework.security.config.annotation.web.builders.HttpSecurity;
 import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
-import org.springframework.security.config.annotation.web.configurers.AbstractHttpConfigurer;
 import org.springframework.security.config.http.SessionCreationPolicy;
 import org.springframework.security.web.SecurityFilterChain;
 import org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter;
 
+
 @Configuration
 @EnableWebSecurity
 @RequiredArgsConstructor
@@ -28,14 +28,13 @@ public class SecurityConfig {
     private final CustomLoginSuccessHandler customLoginSuccessHandler;
 
     @Bean
-    public SecurityFilterChain securityFilterChain(HttpSecurity http) throws Exception {
+    public SecurityFilterChain filterChain(HttpSecurity http) throws Exception {
         http
-                .httpBasic(AbstractHttpConfigurer::disable) // HTTP 기본 인증 비활성화
-                .cors(cors -> {}) // CORS 활성화
-                .csrf(AbstractHttpConfigurer::disable) // CSRF 보호 비활성화
-                .sessionManagement(sessionManagement ->
-                        sessionManagement.sessionCreationPolicy(SessionCreationPolicy.STATELESS) // 세션 관리 정책 설정
-                );
+                .httpBasic().disable() // HTTP 기본 인증을 비활성화
+                .cors().and() // CORS 활성화
+                .csrf().disable() // CSRF 보호 기능 비활성화
+                .sessionManagement()
+                .sessionCreationPolicy(SessionCreationPolicy.STATELESS); // 세션관리 정책을 STATELESS(세션이 있으면 쓰지도 않고, 없으면 만들지도 않는다)
 
         http
                 .formLogin(form -> form
@@ -45,39 +44,35 @@ public SecurityFilterChain securityFilterChain(HttpSecurity http) throws Excepti
                 );
 
         http
-                .logout(logout -> logout
-                        .logoutUrl("/logout")
-                        .logoutSuccessUrl("/")
-                        .permitAll()
-                );
+                .logout()
+                .logoutUrl("/logout")
+                .logoutSuccessUrl("/")
+                .permitAll();
 
         http
-                .authorizeHttpRequests(authorizeRequests ->
-                        authorizeRequests
-                                .requestMatchers("/public/**", "/login", "/signup").permitAll() // 특정 경로만 허용
-                                .anyRequest().authenticated() // 나머지 요청은 인증 필요
-                );
+                .authorizeHttpRequests()
+                .anyRequest().permitAll();
 
         http
-                .exceptionHandling(exceptionHandling ->
-                        exceptionHandling.accessDeniedPage("/error")
-                );
+                .exceptionHandling()
+                .accessDeniedPage("/error");
 
         http
                 .oauth2Login(oauth2 -> oauth2
-                        .loginPage("/oauth2/authorization") // OAuth2 로그인 페이지 설정
-                        .userInfoEndpoint(userInfoEndpoint ->
-                                userInfoEndpoint.userService(customOAuth2UserService)
-                        )
-                        .failureHandler(oAuth2LoginFailureHandler)
-                        .successHandler(oAuth2LoginSuccessHandler)
+                        .loginPage("/login")
+                        .userInfoEndpoint()
+                        .userService(customOAuth2UserService) // OAuth2 로그인시 사용자 정보를 가져오는 엔드포인트와 사용자 서비스를 설정
+                        .and()
+                        .failureHandler(oAuth2LoginFailureHandler) // OAuth2 로그인 실패시 처리할 핸들러를 지정해준다.
+                        .successHandler(oAuth2LoginSuccessHandler) // OAuth2 로그인 성공시 처리할 핸들러를 지정해준다.
                         .permitAll()
                 );
 
-        // JWT 인증 필터를 UsernamePasswordAuthenticationFilter 앞에 추가
-        http.addFilterBefore(jwtAuthFilter, UsernamePasswordAuthenticationFilter.class);
-        http.addFilterBefore(jwtExceptionFilter, JwtAuthFilter.class);
 
-        return http.build();
+        // JWT 인증 필터를 UsernamePasswordAuthenticationFilter 앞에 추가한다.
+        return http
+                .addFilterBefore(jwtAuthFilter, UsernamePasswordAuthenticationFilter.class)
+                .addFilterBefore(jwtExceptionFilter, JwtAuthFilter.class)
+                .build();
     }
-}
+}
\ No newline at end of file