diff --git a/src/main/java/com/strcat/config/SecurityConfig.java b/src/main/java/com/strcat/config/SecurityConfig.java
index f2e1d28..fe622fd 100644
--- a/src/main/java/com/strcat/config/SecurityConfig.java
+++ b/src/main/java/com/strcat/config/SecurityConfig.java
@@ -37,7 +37,7 @@ public class SecurityConfig {
             "favicon.ico",
             "v3/api-docs/**",
             "swagger-ui/**",
-            "boards/*",
+            "boards/{boardId}",
             "boards/*/summaries",
             "boards/*/contents",
             "boards/*/contents/pictures",
diff --git a/src/main/java/com/strcat/controller/BoardController.java b/src/main/java/com/strcat/controller/BoardController.java
index e8c990d..8ab7dc0 100644
--- a/src/main/java/com/strcat/controller/BoardController.java
+++ b/src/main/java/com/strcat/controller/BoardController.java
@@ -15,6 +15,7 @@
 import io.swagger.v3.oas.annotations.responses.ApiResponses;
 import io.swagger.v3.oas.annotations.security.SecurityRequirement;
 import io.swagger.v3.oas.annotations.tags.Tag;
+import java.util.Optional;
 import lombok.RequiredArgsConstructor;
 import org.springframework.http.HttpStatusCode;
 import org.springframework.security.core.Authentication;
@@ -84,7 +85,8 @@ public String createPicture(@PathVariable(name = "boardId") String encryptedBoar
     @Operation(summary = "보드 조회", description = "보드에 대한 모든 정보와 보드 소유자 여부를 반환합니다.")
     public ReadBoardResDto readBoard(Authentication authentication,
                                      @PathVariable(name = "boardId") String encryptedBoardId) {
-        Long userId = (Long) authentication.getPrincipal();
+        Long userId = authentication != null ? (Long) authentication.getPrincipal() : null;
+
         return boardService.readBoard(encryptedBoardId, userId);
     }
 
@@ -101,7 +103,9 @@ public ReadBoardSummaryResDto readSummary(@PathVariable(name = "boardId") String
             @Content(examples = {@ExampleObject("인증 실패")})})
     public ReadBoardResDto deleteContents(@PathVariable(name = "boardId") String encryptedBoardId, @RequestBody
             DeleteContentReqDto dto, Authentication authentication) {
-        if (authentication == null) throw new ResponseStatusException(HttpStatusCode.valueOf(401));
+        if (authentication == null) {
+            throw new ResponseStatusException(HttpStatusCode.valueOf(401));
+        }
 
         User user = (User) authentication.getCredentials();
 
diff --git a/src/main/java/com/strcat/service/BoardService.java b/src/main/java/com/strcat/service/BoardService.java
index 00d0b68..a39ac40 100644
--- a/src/main/java/com/strcat/service/BoardService.java
+++ b/src/main/java/com/strcat/service/BoardService.java
@@ -39,15 +39,14 @@ public String createBoard(CreateBoardReqDto dto, Long userId) {
     public ReadBoardResDto readBoard(String encryptedBoardId, Long userId) {
         Board board = boardRepository.findByEncryptedId(encryptedBoardId)
                 .orElseThrow(() -> new NotAcceptableException("존재하지 않는 보드입니다."));
-
-        try {
+        if (userId != null) {
             recordHistoryUseCase.write(userId,
                     List.of(new HistoryItem(encryptedBoardId, board.getTitle(), LocalDateTime.now())));
+
             Boolean isOwner = userId.equals(board.getUser().getId());
             return board.toReadBoardResDto(isOwner);
-        } catch (NotAcceptableException e) {
-            return board.toReadBoardResDto(false);
         }
+        return board.toReadBoardResDto(false);
     }
 
     public ReadBoardSummaryResDto readSummary(String encryptedBoardId) {