diff --git a/backend/src/routes/cockpit.ts b/backend/src/routes/cockpit.ts
index aa8525c..fc6cedb 100644
--- a/backend/src/routes/cockpit.ts
+++ b/backend/src/routes/cockpit.ts
@@ -1,56 +1,112 @@
-import { Router, Request, Response } from 'express';
+import { Router, Response } from 'express';
 import { PrismaClient } from '@prisma/client';
 import { PaymentService } from '../modules/banking/paymentService';
-import { requireAuth } from '../middleware/auth';
+import { AuthedRequest, requireAuth } from '../middleware/auth';
 
 const prisma = new PrismaClient();
 const paymentService = new PaymentService(prisma);
 
-/** Router für das Vermieter-Cockpit-Dashboard (aggregierte Übersichtsdaten). */
+/** Router für das Cockpit-Dashboard (aggregierte Übersichtsdaten). */
 export const cockpitRouter = Router();
 
+const TICKET_SELECT = {
+  id: true,
+  title: true,
+  category: true,
+  priority: true,
+  status: true,
+  createdAt: true,
+  room: { select: { roomNumber: true } },
+  creator: { select: { id: true, fullName: true } },
+} as const;
+
 // Erfordert Login: sensible Miet- und Kontaktdaten dürfen nicht öffentlich sein.
-cockpitRouter.get('/cockpit/summary', requireAuth, async (_req: Request, res: Response) => {
-  const [trafficLights, openTickets, rooms] = await Promise.all([
+//
+// Berechtigungsregel: Mieter dürfen NUR ihre eigenen Miet-/Vertragsdaten und
+// Tickets sehen (plus Gemeinschaftsbereich-Tickets ohne Zimmerzuordnung) —
+// niemals die Miet-/Kontaktdaten oder privaten Zimmer-Tickets anderer Mieter.
+// Vermieter/Admin sehen weiterhin die vollständige Übersicht über die WG.
+cockpitRouter.get('/cockpit/summary', requireAuth, async (req: AuthedRequest, res: Response) => {
+  const isLandlord = req.user!.role === 'LANDLORD' || req.user!.role === 'ADMIN';
+
+  if (isLandlord) {
+    const [trafficLights, openTickets, rooms] = await Promise.all([
+      paymentService.getRentTrafficLights(),
+      prisma.ticket.findMany({
+        where: { status: { in: ['OPEN', 'IN_PROGRESS'] } },
+        orderBy: { createdAt: 'desc' },
+        select: TICKET_SELECT,
+      }),
+      prisma.room.findMany({
+        select: { id: true, roomNumber: true, sizeSqm: true, status: true },
+        orderBy: { roomNumber: 'asc' },
+      }),
+    ]);
+
+    const counts = { GREEN: 0, YELLOW: 0, RED: 0 } as Record<'GREEN' | 'YELLOW' | 'RED', number>;
+    let totalWarmRentSum = 0;
+    for (const light of trafficLights) {
+      counts[light.status]++;
+      totalWarmRentSum += light.amountDue;
+    }
+
+    return res.status(200).json({
+      role: req.user!.role,
+      generatedAt: new Date().toISOString(),
+      rooms,
+      trafficLights,
+      summary: {
+        totalRooms: rooms.length,
+        rentGreen: counts.GREEN,
+        rentYellow: counts.YELLOW,
+        rentRed: counts.RED,
+        totalMonthlyRentTarget: totalWarmRentSum,
+        openTicketsCount: openTickets.length,
+      },
+      openTickets,
+    });
+  }
+
+  // --- Mieter-Ansicht: nur eigene Daten + Gemeinschaftsbereich ---
+  const me = await prisma.user.findUnique({
+    where: { id: req.user!.id },
+    select: { roomId: true },
+  });
+  const ownRoomId = me?.roomId ?? null;
+
+  const [allTrafficLights, openTickets] = await Promise.all([
     paymentService.getRentTrafficLights(),
     prisma.ticket.findMany({
-      where: { status: { in: ['OPEN', 'IN_PROGRESS'] } },
-      orderBy: { createdAt: 'desc' },
-      select: {
-        id: true,
-        title: true,
-        category: true,
-        priority: true,
-        status: true,
-        createdAt: true,
-        room: { select: { roomNumber: true } },
+      where: {
+        status: { in: ['OPEN', 'IN_PROGRESS'] },
+        OR: [
+          { creatorId: req.user!.id },
+          { roomId: null },
+          ...(ownRoomId ? [{ roomId: ownRoomId }] : []),
+        ],
       },
-    }),
-    prisma.room.findMany({
-      select: { id: true, roomNumber: true, sizeSqm: true, status: true },
-      orderBy: { roomNumber: 'asc' },
+      orderBy: { createdAt: 'desc' },
+      select: TICKET_SELECT,
     }),
   ]);
 
-  const counts = { GREEN: 0, YELLOW: 0, RED: 0 } as Record<'GREEN' | 'YELLOW' | 'RED', number>;
-  let totalWarmRentSum = 0;
-  for (const light of trafficLights) {
-    counts[light.status]++;
-    totalWarmRentSum += light.amountDue;
+  // Eigenen aktiven Vertrag laden, um die passende Ampel aus der Gesamtliste herauszufiltern
+  // (getRentTrafficLights liefert alle Verträge — hier wird strikt auf den eigenen reduziert).
+  const myContract = await prisma.contract.findFirst({
+    where: { userId: req.user!.id, isActive: true },
+    include: { room: true },
+  });
+
+  let myRent = null;
+  if (myContract) {
+    myRent = allTrafficLights.find((l) => l.contractId === myContract.id) || null;
   }
 
   res.status(200).json({
+    role: req.user!.role,
     generatedAt: new Date().toISOString(),
-    rooms,
-    trafficLights,
-    summary: {
-      totalRooms: rooms.length,
-      rentGreen: counts.GREEN,
-      rentYellow: counts.YELLOW,
-      rentRed: counts.RED,
-      totalMonthlyRentTarget: totalWarmRentSum,
-      openTicketsCount: openTickets.length,
-    },
+    myRoom: myContract?.room ? { id: myContract.room.id, roomNumber: myContract.room.roomNumber } : null,
+    myRent,
     openTickets,
   });
 });