diff --git a/backend/app.js b/backend/app.js
index 7a0e6c7..c64485a 100644
--- a/backend/app.js
+++ b/backend/app.js
@@ -24,6 +24,7 @@ import travelAccommodationRoutes from "./routes/travelAccommodationRoutes.js";
 import settingsParticipantRoutes from "./routes/settingsParticipantRoutes.js";
 import weatherRoutes from "./routes/weatherRoutes.js";
 import { profanity } from "./middleware/profanity.js";
+import rateLimit from "express-rate-limit";
 
 const app = express();
 
@@ -43,6 +44,24 @@ app.use(
   })
 );
 
+// short-term limit
+const perMinuteLimiter = rateLimit({
+  windowMs: 60 * 1000, // 1 minute
+  max: 10000,            // 10000 requests/minute
+  message: "Too many requests, please slow down.",
+});
+
+// long-term limit (daily)
+const perDayLimiter = rateLimit({
+  windowMs: 24 * 60 * 60 * 1000, // 24h
+  max: 50000,                     // 50k requests/day
+  message: "Daily rate limit reached.",
+});
+
+// Apply globally
+app.use(perMinuteLimiter);
+app.use(perDayLimiter);
+
 app.use(passport.initialize());
 app.use(passport.session());
 
diff --git a/frontend/README.md b/frontend/README.md
deleted file mode 100644
index 7059a96..0000000
--- a/frontend/README.md
+++ /dev/null
@@ -1,12 +0,0 @@
-# React + Vite
-
-This template provides a minimal setup to get React working in Vite with HMR and some ESLint rules.
-
-Currently, two official plugins are available:
-
-- [@vitejs/plugin-react](https://github.com/vitejs/vite-plugin-react/blob/main/packages/plugin-react) uses [Babel](https://babeljs.io/) for Fast Refresh
-- [@vitejs/plugin-react-swc](https://github.com/vitejs/vite-plugin-react/blob/main/packages/plugin-react-swc) uses [SWC](https://swc.rs/) for Fast Refresh
-
-## Expanding the ESLint configuration
-
-If you are developing a production application, we recommend using TypeScript with type-aware lint rules enabled. Check out the [TS template](https://github.com/vitejs/vite/tree/main/packages/create-vite/template-react-ts) for information on how to integrate TypeScript and [`typescript-eslint`](https://typescript-eslint.io) in your project.