diff --git a/env/bitbucket/Dockerfile b/env/bitbucket/Dockerfile
index d892093e..8d3a6b1a 100644
--- a/env/bitbucket/Dockerfile
+++ b/env/bitbucket/Dockerfile
@@ -54,7 +54,7 @@ RUN apt-get update && \
   fonts-arphic-uming \
   ttf-wqy-zenhei \
   ttf-wqy-microhei \
-  xfonts-wqy \
+  xfonts-wqy
 
 RUN npm --version
 
diff --git a/env_secrets/caprover.env b/env_secrets/caprover.env
index e32c2e07..6f8edb42 100644
Binary files a/env_secrets/caprover.env and b/env_secrets/caprover.env differ
diff --git a/prepare_server_cypress.sh b/prepare_server_cypress.sh
index 023ac515..49612f88 100755
--- a/prepare_server_cypress.sh
+++ b/prepare_server_cypress.sh
@@ -82,18 +82,12 @@ if [ "$PROXY_VUE" = true ]; then
 fi
 
 # install cypress here to avoid problems with `npm install` on the iesc servers
-CYPRESS_INSTALLED=0
-#npx --no-install cypress --version || CYPRESS_INSTALLED=$?
-if [ $CYPRESS_INSTALLED -ne 0 ]; then
-  echo "install cypress"
-#  npm install cypress@5.6.0 @testing-library/cypress@7.0.2 --no-save
-fi
-
-
-# the sftp server is currently not needed
-# rm -rf test_sftp
-# mkdir -p test_sftp
-# (cd test_sftp && mkdir -p outbox && sftpserver -p 3373 -k ../src/myservice/apps/export/sftp_test_key.pem -l INFO &)
+#CYPRESS_INSTALLED=0
+##npx --no-install cypress --version || CYPRESS_INSTALLED=$?
+#if [ $CYPRESS_INSTALLED -ne 0 ]; then
+#  echo "install cypress"
+##  npm install cypress@5.6.0 @testing-library/cypress@7.0.2 --no-save
+#fi
 
 if [ "$START_BACKGROUND" = true ]; then
     python3 server/manage.py runserver 8001 --settings="$DJANGO_SETTINGS_MODULE" > /dev/null &
diff --git a/server/config/settings/base.py b/server/config/settings/base.py
index 5fabe732..5417e5c5 100644
--- a/server/config/settings/base.py
+++ b/server/config/settings/base.py
@@ -372,6 +372,17 @@ REST_FRAMEWORK = {
         "rest_framework.authentication.TokenAuthentication",
     ),
     "DEFAULT_PERMISSION_CLASSES": ("rest_framework.permissions.IsAuthenticated",),
+    "TEST_REQUEST_DEFAULT_FORMAT": "json",
+    "DEFAULT_THROTTLE_CLASSES": [
+        "rest_framework.throttling.AnonRateThrottle",
+        "vbv_lernwelt.core.utils.HourUserRateThrottle",
+        "vbv_lernwelt.core.utils.DayUserRateThrottle",
+    ],
+    "DEFAULT_THROTTLE_RATES": {
+        "anon": "200/day",
+        "hour-throttle": "400/hour",
+        "day-throttle": "2000/day",
+    },
 }
 
 # django-cors-headers - https://github.com/adamchainz/django-cors-headers#setup
@@ -465,7 +476,7 @@ if DJANGO_DEV_MODE == "development":
     # https://django-extensions.readthedocs.io/en/latest/installation_instructions.html#configuration
     INSTALLED_APPS += ["django_extensions"]  # noqa F405
 
-if DJANGO_DEV_MODE == "production":
+if DJANGO_DEV_MODE in ["production", "caprover"]:
     # SECURITY
     # ------------------------------------------------------------------------------
     # https://docs.djangoproject.com/en/dev/ref/settings/#secure-proxy-ssl-header
diff --git a/server/config/settings/test_cypress.py b/server/config/settings/test_cypress.py
index 076e11dd..dd94cb1f 100644
--- a/server/config/settings/test_cypress.py
+++ b/server/config/settings/test_cypress.py
@@ -35,11 +35,10 @@ DATABASES = {
 
 # Your stuff...
 # ------------------------------------------------------------------------------
-# REST_FRAMEWORK['DEFAULT_THROTTLE_RATES'] = {
-#     'anon': '100/day',
-#     'hour-throttle': '40000/hour',
-#     'day-throttle': '2000000/day',
-#     'easy-throttle': '50000/day',
-# }
-#
-# RATELIMIT_ENABLE = False
+REST_FRAMEWORK["DEFAULT_THROTTLE_RATES"] = {
+    "anon": "10000/day",
+    "hour-throttle": "40000/hour",
+    "day-throttle": "2000000/day",
+}
+
+RATELIMIT_ENABLE = False
diff --git a/server/config/urls.py b/server/config/urls.py
index 23311735..eb415853 100644
--- a/server/config/urls.py
+++ b/server/config/urls.py
@@ -2,23 +2,39 @@ from django.conf import settings
 from django.conf.urls.static import static
 from django.contrib import admin
 from django.contrib.auth import views as auth_views
+from django.contrib.auth.decorators import user_passes_test
 from django.contrib.staticfiles.urls import staticfiles_urlpatterns
 from django.urls import include, path
 from django.views import defaults as default_views
 from django.views.generic import TemplateView
 from drf_spectacular.views import SpectacularAPIView, SpectacularSwaggerView
+from ratelimit.exceptions import Ratelimited
 from rest_framework.authtoken.views import obtain_auth_token
 
 from vbv_lernwelt.core.middleware.auth import django_view_authentication_exempt
+from vbv_lernwelt.core.views import (
+    rate_limit_exceeded_view,
+    permission_denied_view,
+    check_rate_limit,
+)
+
+
+def raise_example_error(request):
+    """
+    raise error to check if it gets logged
+    """
+    raise Exception("Test Error: I know python!")
+    # pylint: disable=unreachable
+    return HttpResponse("no error?")
+
 
 # fmt: off
 urlpatterns = [
     path("", django_view_authentication_exempt(TemplateView.as_view(template_name="pages/home.html")), name="home"),
-    path("about/", TemplateView.as_view(template_name="pages/about.html"), name="about"),
-    # Django Admin, use {% url 'admin:index' %}
+    path('admin/raise_error/', user_passes_test(lambda u: u.is_superuser, login_url='/login/')(raise_example_error), ),
     path(settings.ADMIN_URL, admin.site.urls),
-    # Your stuff: custom urls includes go here
     path("login/", django_view_authentication_exempt(auth_views.LoginView.as_view(template_name="core/login.html"))),
+    path("checkratelimit/", check_rate_limit),
     path("todo/", include("vbv_lernwelt.simpletodo.urls")),
 ] + static(settings.MEDIA_URL, document_root=settings.MEDIA_ROOT)
 if settings.DEBUG:
@@ -36,6 +52,18 @@ urlpatterns += [
 ]
 # fmt: on
 
+
+def handler403(request, exception=None):
+    if isinstance(exception, Ratelimited):
+        # if request.path.startswith("/swisscom/customer"):
+        #     return SwisscomCustomerLandingPageErrorView.as_view()(request)
+        return rate_limit_exceeded_view(request, exception)
+    return permission_denied_view(request, exception)
+
+
+handler500 = "vbv_lernwelt.core.views.server_json_error"
+
+
 if settings.DEBUG:
     # This allows the error pages to be debugged during development, just visit
     # these url in browser to see how these error pages look like.
diff --git a/server/integration_tests/__init__.py b/server/integration_tests/__init__.py
new file mode 100644
index 00000000..e69de29b
diff --git a/server/integration_tests/ratelimit/__init__.py b/server/integration_tests/ratelimit/__init__.py
new file mode 100644
index 00000000..e69de29b
diff --git a/server/integration_tests/ratelimit/test_ratelimit.py b/server/integration_tests/ratelimit/test_ratelimit.py
new file mode 100644
index 00000000..20e9c0a8
--- /dev/null
+++ b/server/integration_tests/ratelimit/test_ratelimit.py
@@ -0,0 +1,17 @@
+from django.test import TestCase, override_settings
+
+
+class RateLimitTest(TestCase):
+    def setUp(self):
+        self.url = "/checkratelimit/"
+
+    @override_settings(RATELIMIT_ENABLE=True)
+    def test_checkView_rateLimitAfter5Requests(self):
+        for i in range(10):
+            response = self.client.get(self.url)
+
+            if i < 5:
+                self.assertEqual(response.status_code, 200)
+            else:
+                # der 6. Zugriff wird gesperrt
+                self.assertEqual(response.status_code, 429)
diff --git a/server/requirements/requirements-dev.txt b/server/requirements/requirements-dev.txt
index 571f75a8..45cb530a 100644
--- a/server/requirements/requirements-dev.txt
+++ b/server/requirements/requirements-dev.txt
@@ -91,6 +91,8 @@ django-htmx==1.8.0
     # via -r requirements.in
 django-model-utils==4.2.0
     # via -r requirements.in
+django-ratelimit==3.0.1
+    # via -r requirements.in
 django-redis==5.2.0
     # via -r requirements.in
 django-stubs==1.9.0
diff --git a/server/requirements/requirements.in b/server/requirements/requirements.in
index 0c591bb3..e4912c88 100644
--- a/server/requirements/requirements.in
+++ b/server/requirements/requirements.in
@@ -21,6 +21,7 @@ drf-spectacular
 django-htmx
 dj-database-url
 django-click
+django-ratelimit
 
 psycopg2-binary
 gunicorn
diff --git a/server/requirements/requirements.txt b/server/requirements/requirements.txt
index cf3df98a..832163d7 100644
--- a/server/requirements/requirements.txt
+++ b/server/requirements/requirements.txt
@@ -45,6 +45,8 @@ django-htmx==1.8.0
     # via -r requirements.in
 django-model-utils==4.2.0
     # via -r requirements.in
+django-ratelimit==3.0.1
+    # via -r requirements.in
 django-redis==5.2.0
     # via -r requirements.in
 djangorestframework==3.13.1
diff --git a/server/vbv_lernwelt/core/management/commands/cypress_reset.py b/server/vbv_lernwelt/core/management/commands/cypress_reset.py
index 8d1ba152..76dbf7cb 100644
--- a/server/vbv_lernwelt/core/management/commands/cypress_reset.py
+++ b/server/vbv_lernwelt/core/management/commands/cypress_reset.py
@@ -5,13 +5,15 @@ from django.contrib.auth import get_user_model
 
 
 @click.command()
-@click.option('--customer_language', default='de')
+@click.option("--customer_language", default="de")
 def command(customer_language):
     print("cypress reset data")
 
     User = get_user_model()
 
-    users = ['cypress@example.com', ]
+    users = [
+        "cypress@example.com",
+    ]
     for user in users:
         User.objects.filter(username=user).delete()
 
diff --git a/server/vbv_lernwelt/core/utils.py b/server/vbv_lernwelt/core/utils.py
index af2d91a5..c1011162 100644
--- a/server/vbv_lernwelt/core/utils.py
+++ b/server/vbv_lernwelt/core/utils.py
@@ -1,6 +1,7 @@
 import logging
 
 from django.conf import settings
+from rest_framework.throttling import UserRateThrottle
 from structlog.types import EventDict
 
 
@@ -11,3 +12,11 @@ def add_app_info(
     event_dict["django_dev_mode"] = settings.DJANGO_DEV_MODE
 
     return event_dict
+
+
+class HourUserRateThrottle(UserRateThrottle):
+    scope = "hour-throttle"
+
+
+class DayUserRateThrottle(UserRateThrottle):
+    scope = "day-throttle"
diff --git a/server/vbv_lernwelt/core/views.py b/server/vbv_lernwelt/core/views.py
index 60f00ef0..69fe7e5c 100644
--- a/server/vbv_lernwelt/core/views.py
+++ b/server/vbv_lernwelt/core/views.py
@@ -1 +1,32 @@
 # Create your views here.
+from django.http import JsonResponse, HttpResponse
+from django.shortcuts import render
+from ratelimit.decorators import ratelimit
+
+from vbv_lernwelt.core.middleware.auth import django_view_authentication_exempt
+
+
+def permission_denied_view(request, exception):
+    return render(request, "403.html", status=403)
+
+
+def rate_limit_exceeded_view(request, exception):
+    return render(request, "429.html", status=429)
+
+
+@django_view_authentication_exempt
+def server_json_error(request, *args, **kwargs):
+    """
+    Generic 500 error handler.
+    """
+    data = {
+        "detail": "Server Error (500)",
+        "status_code": 500,
+    }
+    return JsonResponse(data, status=500)
+
+
+@ratelimit(key="ip", rate="5/m", block=True)
+@django_view_authentication_exempt
+def check_rate_limit(request):
+    return HttpResponse(content=b"Hello")
diff --git a/server/vbv_lernwelt/simpletodo/serializers.py b/server/vbv_lernwelt/simpletodo/serializers.py
index bb58d995..4415b904 100644
--- a/server/vbv_lernwelt/simpletodo/serializers.py
+++ b/server/vbv_lernwelt/simpletodo/serializers.py
@@ -9,15 +9,22 @@ class SimpleTaskSerializer(ModelSerializer):
 
     class Meta:
         model = SimpleTask
-        fields = ['id', 'title', 'text', 'done', 'deadline', 'list_title', ]
+        fields = [
+            "id",
+            "title",
+            "text",
+            "done",
+            "deadline",
+            "list_title",
+        ]
 
     def create(self, validated_data):
-        user = validated_data.pop('user', None)
+        user = validated_data.pop("user", None)
         if user is None:
-            raise serializers.ValidationError('User is required')
+            raise serializers.ValidationError("User is required")
 
-        list_title = validated_data.pop('list_title')
+        list_title = validated_data.pop("list_title")
         simple_list, _ = SimpleList.objects.get_or_create(title=list_title, user=user)
 
-        validated_data['list'] = simple_list
+        validated_data["list"] = simple_list
         return super().create(validated_data)
diff --git a/server/vbv_lernwelt/simpletodo/tests/test_serializers.py b/server/vbv_lernwelt/simpletodo/tests/test_serializers.py
index 4399b3bb..40893365 100644
--- a/server/vbv_lernwelt/simpletodo/tests/test_serializers.py
+++ b/server/vbv_lernwelt/simpletodo/tests/test_serializers.py
@@ -10,15 +10,17 @@ class SimpleTaskSerializerTestCase(TestCase):
         self.user = UserFactory()
 
     def test_serializer(self):
-        serializer = SimpleTaskSerializer(data={
-            'title': 'Test',
-            'list_title': 'Todos',
-        })
+        serializer = SimpleTaskSerializer(
+            data={
+                "title": "Test",
+                "list_title": "Todos",
+            }
+        )
 
         serializer.is_valid(raise_exception=True)
         serializer.save(user=self.user)
 
         task = SimpleTask.objects.first()
 
-        self.assertEqual(task.title, 'Test')
-        self.assertEqual(task.list.title, 'Todos')
+        self.assertEqual(task.title, "Test")
+        self.assertEqual(task.list.title, "Todos")
diff --git a/server/vbv_lernwelt/simpletodo/urls.py b/server/vbv_lernwelt/simpletodo/urls.py
index b5810b6d..f4cafd9a 100644
--- a/server/vbv_lernwelt/simpletodo/urls.py
+++ b/server/vbv_lernwelt/simpletodo/urls.py
@@ -5,9 +5,9 @@ from rest_framework.routers import DefaultRouter
 from . import views
 
 router = DefaultRouter()
-router.register(r'tasks', views.SimpleTaskViewSet, basename='tasks')
+router.register(r"tasks", views.SimpleTaskViewSet, basename="tasks")
 
 urlpatterns = [
     path("", views.index, name="index"),
-    url(r'^api/', include(router.urls)),
+    url(r"^api/", include(router.urls)),
 ]
diff --git a/server/vbv_lernwelt/simpletodo/views.py b/server/vbv_lernwelt/simpletodo/views.py
index 53d064cd..71b57b9d 100644
--- a/server/vbv_lernwelt/simpletodo/views.py
+++ b/server/vbv_lernwelt/simpletodo/views.py
@@ -15,9 +15,7 @@ def index(request):
     if simple_lists.count() == 0:
         simple_lists = [SimpleList.objects.create(user=request.user, title="Todos")]
 
-    return render(request, 'simpletodo/index.html', {
-        'simple_lists': simple_lists
-    })
+    return render(request, "simpletodo/index.html", {"simple_lists": simple_lists})
 
 
 class SimpleTaskViewSet(viewsets.ModelViewSet):
@@ -31,38 +29,43 @@ class SimpleTaskViewSet(viewsets.ModelViewSet):
     def create(self, request, *args, **kwargs):
         serializer = self.get_serializer(data=request.data)
 
-        if request.accepted_renderer.format == 'html':
+        if request.accepted_renderer.format == "html":
             serializer.is_valid(raise_exception=True)
         else:
             serializer.is_valid(raise_exception=True)
 
         serializer.save(user=request.user)
 
-        if request.accepted_renderer.format == 'html':
+        if request.accepted_renderer.format == "html":
             return redirect("/todo/")
 
         headers = self.get_success_headers(serializer.data)
-        return Response(serializer.data, status=status.HTTP_201_CREATED, headers=headers)
+        return Response(
+            serializer.data, status=status.HTTP_201_CREATED, headers=headers
+        )
 
     def destroy(self, request, *args, **kwargs):
         instance = self.get_object()
         instance.delete()
 
         if request.htmx:
-            return HttpResponse(status=200, content='')
+            return HttpResponse(status=200, content="")
 
         return Response(status=status.HTTP_204_NO_CONTENT)
 
-    @action(detail=True, methods=['post',])
+    @action(
+        detail=True,
+        methods=[
+            "post",
+        ],
+    )
     def toggle_done(self, request, pk=None):
         task = self.get_object()
         task.done = not task.done
         task.save()
 
         if request.htmx:
-            return render(request, 'simpletodo/partials/task.html', {
-                'task': task
-            })
+            return render(request, "simpletodo/partials/task.html", {"task": task})
 
         return Response(self.get_serializer(task), status=status.HTTP_200_OK)
 
diff --git a/server/vbv_lernwelt/templates/403.html b/server/vbv_lernwelt/templates/403.html
index 4356d932..4ed30cca 100644
--- a/server/vbv_lernwelt/templates/403.html
+++ b/server/vbv_lernwelt/templates/403.html
@@ -1,7 +1,5 @@
 {% extends "base.html" %}
 
-{% block title %}Forbidden (403){% endblock %}
-
 {% block content %}
 <h1>Forbidden (403)</h1>
 
diff --git a/server/vbv_lernwelt/templates/429.html b/server/vbv_lernwelt/templates/429.html
new file mode 100644
index 00000000..592f46e6
--- /dev/null
+++ b/server/vbv_lernwelt/templates/429.html
@@ -0,0 +1,5 @@
+{% extends "base.html" %}
+
+{% block content %}
+  <h1>Rate Limit (429)</h1>
+{% endblock content %}
diff --git a/server/vbv_lernwelt/templates/500.html b/server/vbv_lernwelt/templates/500.html
index 46e43a9c..9d263f61 100644
--- a/server/vbv_lernwelt/templates/500.html
+++ b/server/vbv_lernwelt/templates/500.html
@@ -1,7 +1,5 @@
 {% extends "base.html" %}
 
-{% block title %}Server Error{% endblock %}
-
 {% block content %}
 <h1>Ooops!!! 500</h1>