diff --git a/backend/src/main/java/wooteco/prolog/DataLoaderApplicationListener.java b/backend/src/main/java/wooteco/prolog/DataLoaderApplicationListener.java
index 82ae9a3c7..e95097e35 100644
--- a/backend/src/main/java/wooteco/prolog/DataLoaderApplicationListener.java
+++ b/backend/src/main/java/wooteco/prolog/DataLoaderApplicationListener.java
@@ -3,6 +3,7 @@
 import static java.util.stream.Collectors.toList;
 import static java.util.stream.Collectors.toMap;
 
+import java.security.SecureRandom;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collection;
@@ -10,7 +11,6 @@
 import java.util.Map;
 import java.util.Random;
 import java.util.Set;
-import java.util.concurrent.ThreadLocalRandom;
 import java.util.function.Function;
 import java.util.stream.Collectors;
 import javax.persistence.EntityManager;
@@ -54,7 +54,7 @@
 @Configuration
 public class DataLoaderApplicationListener implements ApplicationListener<ContextRefreshedEvent> {
 
-    private static final Random random = ThreadLocalRandom.current();
+    private static final Random random = new SecureRandom();
     private static final Logger logger = LoggerFactory.getLogger(DataLoaderApplicationListener.class);
 
     private final EntityManagerFactory entityManagerFactory;
diff --git a/backend/src/test/java/wooteco/prolog/studylog/application/FilterServiceTest.java b/backend/src/test/java/wooteco/prolog/studylog/application/FilterServiceTest.java
new file mode 100644
index 000000000..14d90ba1e
--- /dev/null
+++ b/backend/src/test/java/wooteco/prolog/studylog/application/FilterServiceTest.java
@@ -0,0 +1,78 @@
+package wooteco.prolog.studylog.application;
+
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.ExtendWith;
+import org.mockito.InjectMocks;
+import org.mockito.Mock;
+import org.mockito.junit.jupiter.MockitoExtension;
+import wooteco.prolog.login.ui.LoginMember;
+import wooteco.prolog.member.application.MemberService;
+import wooteco.prolog.member.application.dto.MemberResponse;
+import wooteco.prolog.member.domain.Role;
+import wooteco.prolog.roadmap.application.dto.SessionResponse;
+import wooteco.prolog.session.application.MissionService;
+import wooteco.prolog.session.application.SessionService;
+import wooteco.prolog.session.application.dto.MissionResponse;
+import wooteco.prolog.studylog.application.dto.FilterResponse;
+import wooteco.prolog.studylog.application.dto.TagResponse;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import static org.assertj.core.api.Assertions.*;
+import static org.junit.jupiter.api.Assertions.*;
+import static org.mockito.Mockito.doReturn;
+
+@ExtendWith(MockitoExtension.class)
+class FilterServiceTest {
+
+    @InjectMocks
+    FilterService filterService;
+
+    @Mock
+    SessionService sessionService;
+
+    @Mock
+    MissionService missionService;
+
+    @Mock
+    TagService tagService;
+
+    @Mock
+    MemberService memberService;
+
+    @DisplayName("로그인 멤버와 관련된 세션, 미션, 태그, 멤버 정보를 가져와서 FilterResponse를 반환한다.")
+    @Test
+    void showAll() {
+        // given
+        LoginMember loginMember = new LoginMember();
+
+        List<SessionResponse> sessionResponses = new ArrayList<>();
+        sessionResponses.add(new SessionResponse(1L, "session1"));
+        doReturn(sessionResponses).when(sessionService).findAllWithMySessionFirst(loginMember);
+
+        List<MissionResponse> missionResponses = new ArrayList<>();
+        missionResponses.add(new MissionResponse(1L, "mission1", new wooteco.prolog.session.application.dto.SessionResponse(1L, "session1")));
+        doReturn(missionResponses).when(missionService).findAllWithMyMissionFirst(loginMember);
+
+        List<TagResponse> tagResponses = new ArrayList<>();
+        tagResponses.add(new TagResponse(1L, "tag1"));
+        doReturn(tagResponses).when(tagService).findTagsIncludedInStudylogs();
+
+        List<MemberResponse> memberResponses = new ArrayList<>();
+        memberResponses.add(new MemberResponse(1L, "베베", "bebe", Role.CREW, "img"));
+        doReturn(memberResponses).when(memberService).findAllOrderByNickNameAsc();
+
+        // when
+        FilterResponse response = filterService.showAll(loginMember);
+
+        // then
+        assertAll(
+            () -> assertThat(response.getSessions()).isEqualTo(sessionResponses),
+            () -> assertThat(response.getMissions()).isEqualTo(missionResponses),
+            () -> assertThat(response.getTags()).isEqualTo(tagResponses),
+            () -> assertThat(response.getMembers()).isEqualTo(memberResponses)
+        );
+    }
+}