diff --git a/backend/services/permissionsService.js b/backend/services/permissionsService.js
index f55935e..38ed064 100644
--- a/backend/services/permissionsService.js
+++ b/backend/services/permissionsService.js
@@ -96,7 +96,7 @@ async function getAccess(userId, resourceType, resourceUid) {
 }
 
 async function ownershipOrPermissionWhere(resourceType, userId) {
-    // Admin users can see all resources
+    // Build WHERE clause for resource queries based on ownership and sharing permissions
     // Note: isAdmin expects a UID, but we might receive a numeric ID
     // Get the user's UID if we received a numeric ID
     let userUid = userId;
@@ -118,12 +118,15 @@ async function ownershipOrPermissionWhere(resourceType, userId) {
         `[PERMISSIONS DEBUG] Resource: ${resourceType}, UserId: ${userId}, IsAdmin: ${isUserAdmin}`
     );
 
-    if (isUserAdmin) {
-        console.log(
-            `[PERMISSIONS DEBUG] User is admin, returning empty where clause (all resources visible)`
-        );
-        return {}; // empty where clause = no restriction
-    }
+    // Admin users should NOT see all resources automatically
+    // They should only see their own resources and shared resources, like regular users
+    // If admin-level system-wide visibility is needed, it should be via dedicated admin endpoints
+    // if (isUserAdmin) {
+    //     console.log(
+    //         `[PERMISSIONS DEBUG] User is admin, returning empty where clause (all resources visible)`
+    //     );
+    //     return {}; // empty where clause = no restriction
+    // }
 
     const sharedUids = await getSharedUidsForUser(resourceType, userId);
     console.log(
diff --git a/backend/tests/integration/permissions-admin.test.js b/backend/tests/integration/permissions-admin.test.js
new file mode 100644
index 0000000..3a10a92
--- /dev/null
+++ b/backend/tests/integration/permissions-admin.test.js
@@ -0,0 +1,195 @@
+const request = require('supertest');
+const app = require('../../app');
+const { Task, Project, Note, Role } = require('../../models');
+const { createTestUser } = require('../helpers/testUtils');
+
+describe('Admin Permissions - Resource Visibility', () => {
+    let adminUser, regularUser, adminAgent, regularAgent;
+
+    async function makeAdmin(userId) {
+        await Role.findOrCreate({
+            where: { user_id: userId },
+            defaults: { user_id: userId, is_admin: true },
+        });
+    }
+
+    async function loginAgent(email) {
+        const agent = request.agent(app);
+        await agent.post('/api/login').send({ email, password: 'password123' });
+        return agent;
+    }
+
+    beforeEach(async () => {
+        // Create admin user
+        adminUser = await createTestUser({
+            email: `admin_${Date.now()}@example.com`,
+        });
+        await makeAdmin(adminUser.id);
+
+        // Create regular user
+        regularUser = await createTestUser({
+            email: `regular_${Date.now()}@example.com`,
+        });
+
+        // Login both users
+        adminAgent = await loginAgent(adminUser.email);
+        regularAgent = await loginAgent(regularUser.email);
+    });
+
+    describe('Tasks visibility', () => {
+        it('admin should only see their own tasks, not all tasks', async () => {
+            // Create tasks for both users
+            const adminTask = await Task.create({
+                name: 'Admin Task',
+                user_id: adminUser.id,
+            });
+
+            const regularTask = await Task.create({
+                name: 'Regular User Task',
+                user_id: regularUser.id,
+            });
+
+            // Admin fetches all tasks
+            const res = await adminAgent.get('/api/tasks');
+            expect(res.status).toBe(200);
+
+            const taskIds = res.body.tasks.map((t) => t.id);
+
+            // Admin should see their own task
+            expect(taskIds).toContain(adminTask.id);
+
+            // Admin should NOT see other user's task (THIS IS THE KEY FIX)
+            expect(taskIds).not.toContain(regularTask.id);
+        });
+    });
+
+    describe('Projects visibility', () => {
+        it('admin should only see their own projects, not all projects', async () => {
+            // Create projects for both users
+            const adminProject = await Project.create({
+                name: 'Admin Project',
+                user_id: adminUser.id,
+            });
+
+            const regularProject = await Project.create({
+                name: 'Regular User Project',
+                user_id: regularUser.id,
+            });
+
+            // Admin fetches all projects
+            const res = await adminAgent.get('/api/projects');
+            expect(res.status).toBe(200);
+
+            const projectIds = res.body.projects.map((p) => p.id);
+
+            // Admin should see their own project
+            expect(projectIds).toContain(adminProject.id);
+
+            // Admin should NOT see other user's project (THIS IS THE KEY FIX)
+            expect(projectIds).not.toContain(regularProject.id);
+        });
+    });
+
+    describe('Notes visibility', () => {
+        it('admin should only see their own notes, not all notes', async () => {
+            // Create notes for both users
+            const adminNote = await Note.create({
+                name: 'Admin Note',
+                content: 'Admin content',
+                user_id: adminUser.id,
+            });
+
+            const regularNote = await Note.create({
+                name: 'Regular User Note',
+                content: 'Regular content',
+                user_id: regularUser.id,
+            });
+
+            // Admin fetches all notes
+            const res = await adminAgent.get('/api/notes');
+            expect(res.status).toBe(200);
+
+            const noteIds = res.body.map((n) => n.id);
+
+            // Admin should see their own note
+            expect(noteIds).toContain(adminNote.id);
+
+            // Admin should NOT see other user's note (THIS IS THE KEY FIX)
+            expect(noteIds).not.toContain(regularNote.id);
+        });
+    });
+
+    describe('Regular user behavior unchanged', () => {
+        it('regular user should only see their own tasks', async () => {
+            // Create tasks for both users
+            const adminTask = await Task.create({
+                name: 'Admin Task',
+                user_id: adminUser.id,
+            });
+
+            const regularTask = await Task.create({
+                name: 'Regular User Task',
+                user_id: regularUser.id,
+            });
+
+            // Regular user fetches all tasks
+            const res = await regularAgent.get('/api/tasks');
+            expect(res.status).toBe(200);
+
+            const taskIds = res.body.tasks.map((t) => t.id);
+
+            // Regular user should see their own task
+            expect(taskIds).toContain(regularTask.id);
+
+            // Regular user should NOT see admin's task
+            expect(taskIds).not.toContain(adminTask.id);
+        });
+    });
+
+    describe('Task metrics visibility', () => {
+        it('admin task metrics should only include own tasks', async () => {
+            // Create tasks for admin only (to avoid confusion)
+            const adminTask1 = await Task.create({
+                name: 'Admin Task 1',
+                user_id: adminUser.id,
+                is_completed: false,
+            });
+
+            const adminTask2 = await Task.create({
+                name: 'Admin Task 2',
+                user_id: adminUser.id,
+                is_completed: true,
+            });
+
+            // Create tasks for regular user (should not appear in admin's metrics)
+            await Task.create({
+                name: 'Regular Task 1',
+                user_id: regularUser.id,
+                is_completed: false,
+            });
+
+            await Task.create({
+                name: 'Regular Task 2',
+                user_id: regularUser.id,
+                is_completed: false,
+            });
+
+            // Admin fetches tasks with metrics
+            const res = await adminAgent.get('/api/tasks?compute_metrics=true');
+            expect(res.status).toBe(200);
+
+            // Admin should only see their own tasks in the response
+            expect(res.body.tasks.length).toBe(2);
+
+            // Verify the admin's task IDs are present
+            const taskIds = res.body.tasks.map((t) => t.id);
+            expect(taskIds).toContain(adminTask1.id);
+            expect(taskIds).toContain(adminTask2.id);
+
+            // Verify metrics exist and only count admin's tasks
+            expect(res.body.metrics).toBeDefined();
+            // Admin has 2 tasks total (other users' tasks should not be counted)
+            expect(res.body.metrics.total_open_tasks).toBeLessThanOrEqual(2);
+        });
+    });
+});