diff --git a/src/Api/Startup.cs b/src/Api/Startup.cs
index 5a2e1f8024..5849bfb634 100644
--- a/src/Api/Startup.cs
+++ b/src/Api/Startup.cs
@@ -177,7 +177,6 @@ public class Startup
         services.AddBillingOperations();
         services.AddReportingServices();
         services.AddImportServices();
-        services.AddPhishingDomainService();
 
         // Authorization Handlers
         services.AddAuthorizationHandlers();
diff --git a/src/Api/Utilities/ServiceCollectionExtensions.cs b/src/Api/Utilities/ServiceCollectionExtensions.cs
index 09f4a97eef..feeac03e54 100644
--- a/src/Api/Utilities/ServiceCollectionExtensions.cs
+++ b/src/Api/Utilities/ServiceCollectionExtensions.cs
@@ -2,7 +2,6 @@
 using Bit.Api.Vault.AuthorizationHandlers.Collections;
 using Bit.Core.AdminConsole.OrganizationFeatures.Groups.Authorization;
 using Bit.Core.IdentityServer;
-using Bit.Core.Services;
 using Bit.Core.Settings;
 using Bit.Core.Utilities;
 using Bit.Core.Vault.Authorization.SecurityTasks;
@@ -107,9 +106,4 @@ public static class ServiceCollectionExtensions
         services.AddScoped<IAuthorizationHandler, SecurityTaskAuthorizationHandler>();
         services.AddScoped<IAuthorizationHandler, SecurityTaskOrganizationAuthorizationHandler>();
     }
-
-    public static void AddPhishingDomainService(this IServiceCollection services)
-    {
-        services.AddSingleton<IPhishingDomainService, PhishingDomainService>();
-    }
 }
diff --git a/src/Core/Services/IPhishingDomainService.cs b/src/Core/Services/IPhishingDomainService.cs
deleted file mode 100644
index efce7e4070..0000000000
--- a/src/Core/Services/IPhishingDomainService.cs
+++ /dev/null
@@ -1,6 +0,0 @@
-namespace Bit.Core.Services;
-
-public interface IPhishingDomainService
-{
-    Task<IEnumerable<string>> GetPhishingDomainsAsync();
-}
diff --git a/src/Core/Services/Implementations/PhishingDomainService.cs b/src/Core/Services/Implementations/PhishingDomainService.cs
deleted file mode 100644
index ba8f8e7d2e..0000000000
--- a/src/Core/Services/Implementations/PhishingDomainService.cs
+++ /dev/null
@@ -1,13 +0,0 @@
-using System.Collections.Concurrent;
-
-namespace Bit.Core.Services;
-
-public class PhishingDomainService : IPhishingDomainService
-{
-    private readonly ConcurrentDictionary<string, byte> _phishingDomains = new();
-
-    public Task<IEnumerable<string>> GetPhishingDomainsAsync()
-    {
-        return Task.FromResult(_phishingDomains.Keys.AsEnumerable());
-    }
-}