diff --git a/src/Controllers/AssetsController.cs b/src/Controllers/AssetsController.cs
index bb6df84..c541b86 100644
--- a/src/Controllers/AssetsController.cs
+++ b/src/Controllers/AssetsController.cs
@@ -3,7 +3,9 @@ using Berufsschule_HAM.Models;
 using Berufsschule_HAM.Services;
 using System.Text.Json;
 using Novell.Directory.Ldap;
+using Microsoft.AspNetCore.Authorization;
 
+[Authorize]
 [Route("[controller]")]
 public class AssetsController : Controller
 {
diff --git a/src/Controllers/GroupsController.cs b/src/Controllers/GroupsController.cs
index 39e91df..736fe3e 100644
--- a/src/Controllers/GroupsController.cs
+++ b/src/Controllers/GroupsController.cs
@@ -3,7 +3,9 @@ using Microsoft.AspNetCore.Mvc;
 using Novell.Directory.Ldap;
 using Berufsschule_HAM.Models;
 using System.Text.Json;
+using Microsoft.AspNetCore.Authorization;
 
+[Authorize]
 [Route("[controller]")]
 public class GroupsController : Controller
 {
diff --git a/src/Controllers/LocationsController.cs b/src/Controllers/LocationsController.cs
index 8e46229..3018c77 100644
--- a/src/Controllers/LocationsController.cs
+++ b/src/Controllers/LocationsController.cs
@@ -2,7 +2,9 @@ using Berufsschule_HAM.Services;
 using Berufsschule_HAM.Models;
 using Microsoft.AspNetCore.Mvc;
 using System.Text.Json;
+using Microsoft.AspNetCore.Authorization;
 
+[Authorize]
 [Route("[controller]")]
 public class LocationsController : Controller
 {
diff --git a/src/Controllers/UsersController.cs b/src/Controllers/UsersController.cs
index e2091f5..d68b363 100644
--- a/src/Controllers/UsersController.cs
+++ b/src/Controllers/UsersController.cs
@@ -5,7 +5,9 @@ using Novell.Directory.Ldap;
 using Berufsschule_HAM.Models;
 using System.Security.Cryptography;
 using System.Text;
+using Microsoft.AspNetCore.Authorization;
 
+[Authorize]
 [Route("[controller]")]
 public class UsersController : Controller
 {
diff --git a/src/Program.cs b/src/Program.cs
index d28bfb8..f3eaa4e 100644
--- a/src/Program.cs
+++ b/src/Program.cs
@@ -53,8 +53,11 @@ if (!app.Environment.IsDevelopment())
 }
 
 app.UseElmah();
-app.UseSwagger();
-app.UseSwaggerUI();
+if (app.Environment.IsDevelopment())
+{
+    app.UseSwagger();
+    app.UseSwaggerUI();
+}
 
 app.UseStaticFiles();
 app.UseRouting();
@@ -71,7 +74,8 @@ app.MapControllerRoute(
     name: "default",
     pattern: "{controller=Home}/{action=Index}/{id?}");
 
-app.MapHealthChecks("/healthz");
+app.MapHealthChecks("/healthz")
+    .RequireAuthorization();
 
 // Run migrations
 using var scope = app.Services.CreateScope();