diff --git a/Security/Services/PreAuthService.cs b/Security/Services/PreAuthService.cs
index 2a1929c..21c97ff 100644
--- a/Security/Services/PreAuthService.cs
+++ b/Security/Services/PreAuthService.cs
@@ -13,7 +13,8 @@ public class PreAuthService(ICacheService cache)
 {
     public TimeSpan Lifetime { private get; init; }
 
-    private static string GenerateFirstAuthToken() => Guid.NewGuid().ToString().Replace("-", "");
+    private static string GeneratePreAuthToken() => Guid.NewGuid().ToString().Replace("-", "") + 
+                                                      GeneratorKey.GenerateString(16);
 
     public async Task<PreAuthTokenResponse> CreateLoginTokenAsync(TokenRequest request, string userId, CancellationToken cancellation = default)
     {