diff --git a/src/VirtoCommerce.Platform.Security/Model/SignInValidatorContext.cs b/src/VirtoCommerce.Platform.Security/Model/SignInValidatorContext.cs
new file mode 100644
index 00000000000..0f230c7f92d
--- /dev/null
+++ b/src/VirtoCommerce.Platform.Security/Model/SignInValidatorContext.cs
@@ -0,0 +1,22 @@
+using System;
+using System.Collections.Generic;
+using VirtoCommerce.Platform.Core.Security;
+
+namespace VirtoCommerce.Platform.Security.Model
+{
+    [Obsolete("Use VirtoCommerce.Platform.Security.OpenIddict.TokenRequestContext", DiagnosticId = "VC0008", UrlFormat = "https://docs.virtocommerce.org/products/products-virto3-versions/")]
+    public class SignInValidatorContext
+    {
+        public ApplicationUser User { get; set; }
+
+        public string StoreId { get; set; }
+
+        public bool DetailedErrors { get; set; }
+
+        public bool IsSucceeded { get; set; }
+
+        public bool IsLockedOut { get; set; }
+
+        public IDictionary<string, object> AdditionalParameters { get; set; } = new Dictionary<string, object>(StringComparer.OrdinalIgnoreCase);
+    }
+}
diff --git a/src/VirtoCommerce.Platform.Security/Model/TokenLoginResponse.cs b/src/VirtoCommerce.Platform.Security/Model/TokenLoginResponse.cs
new file mode 100644
index 00000000000..7d279d7a2ba
--- /dev/null
+++ b/src/VirtoCommerce.Platform.Security/Model/TokenLoginResponse.cs
@@ -0,0 +1,30 @@
+using System;
+using System.Collections.Generic;
+using Microsoft.AspNetCore.Identity;
+using OpenIddict.Abstractions;
+
+namespace VirtoCommerce.Platform.Security.Model
+{
+    [Obsolete("Use VirtoCommerce.Platform.Security.OpenIddict.TokenResponse", DiagnosticId = "VC0008", UrlFormat = "https://docs.virtocommerce.org/products/products-virto3-versions/")]
+    public class TokenLoginResponse : OpenIddictResponse
+    {
+        public string UserId { get; set; }
+
+        public IList<IdentityError> Errors
+        {
+            get
+            {
+                var errors = new List<IdentityError>();
+                if (Code != null)
+                {
+                    errors.Add(new IdentityError
+                    {
+                        Code = Code,
+                        Description = ErrorDescription
+                    });
+                }
+                return errors;
+            }
+        }
+    }
+}
diff --git a/src/VirtoCommerce.Platform.Security/SecurityErrorDescriber.cs b/src/VirtoCommerce.Platform.Security/SecurityErrorDescriber.cs
new file mode 100644
index 00000000000..ea89db97ca8
--- /dev/null
+++ b/src/VirtoCommerce.Platform.Security/SecurityErrorDescriber.cs
@@ -0,0 +1,74 @@
+using System;
+using VirtoCommerce.Platform.Core.Common;
+using VirtoCommerce.Platform.Security.Model;
+using static OpenIddict.Abstractions.OpenIddictConstants;
+
+namespace VirtoCommerce.Platform.Security
+{
+    [Obsolete("Use VirtoCommerce.Platform.Security.OpenIddict.SecurityErrorDescriber", DiagnosticId = "VC0008", UrlFormat = "https://docs.virtocommerce.org/products/products-virto3-versions/")]
+    public static class SecurityErrorDescriber
+    {
+        public static TokenLoginResponse LoginFailed() => new()
+        {
+            Error = Errors.InvalidGrant,
+            Code = nameof(LoginFailed).ToSnakeCase(),
+            ErrorDescription = "Login attempt failed. Please check your credentials."
+        };
+
+        public static TokenLoginResponse UserIsLockedOut() => new()
+        {
+            Error = Errors.InvalidGrant,
+            Code = nameof(UserIsLockedOut).ToSnakeCase(),
+            ErrorDescription = "Your account has been locked. Please contact support for assistance."
+        };
+
+        public static TokenLoginResponse UserIsTemporaryLockedOut() => new()
+        {
+            Error = Errors.InvalidGrant,
+            Code = nameof(UserIsLockedOut).ToSnakeCase(),
+            ErrorDescription = "Your account has been temporarily locked. Please try again after some time."
+        };
+
+        public static TokenLoginResponse PasswordExpired() => new()
+        {
+            Error = Errors.InvalidGrant,
+            Code = nameof(PasswordExpired).ToSnakeCase(),
+            ErrorDescription = "Your password has been expired and must be changed.",
+        };
+
+        public static TokenLoginResponse PasswordLoginDisabled() => new()
+        {
+            Error = Errors.InvalidGrant,
+            Code = nameof(PasswordLoginDisabled).ToSnakeCase(),
+            ErrorDescription = "The username/password login is disabled."
+        };
+
+        public static TokenLoginResponse TokenInvalid() => new()
+        {
+            Error = Errors.InvalidGrant,
+            Code = nameof(TokenInvalid).ToSnakeCase(),
+            ErrorDescription = "The token is no longer valid."
+        };
+
+        public static TokenLoginResponse SignInNotAllowed() => new()
+        {
+            Error = Errors.InvalidGrant,
+            Code = nameof(SignInNotAllowed).ToSnakeCase(),
+            ErrorDescription = "The user is no longer allowed to sign in."
+        };
+
+        public static TokenLoginResponse InvalidClient() => new()
+        {
+            Error = Errors.InvalidClient,
+            Code = nameof(InvalidClient).ToSnakeCase(),
+            ErrorDescription = "The client application was not found in the database."
+        };
+
+        public static TokenLoginResponse UnsupportedGrantType() => new()
+        {
+            Error = Errors.UnsupportedGrantType,
+            Code = nameof(UnsupportedGrantType).ToSnakeCase(),
+            ErrorDescription = "The specified grant type is not supported."
+        };
+    }
+}
diff --git a/src/VirtoCommerce.Platform.Security/Services/IUserSignInValidator.cs b/src/VirtoCommerce.Platform.Security/Services/IUserSignInValidator.cs
new file mode 100644
index 00000000000..6c3d01bd2ab
--- /dev/null
+++ b/src/VirtoCommerce.Platform.Security/Services/IUserSignInValidator.cs
@@ -0,0 +1,15 @@
+using System;
+using System.Collections.Generic;
+using System.Threading.Tasks;
+using VirtoCommerce.Platform.Security.Model;
+
+namespace VirtoCommerce.Platform.Security.Services
+{
+    [Obsolete("Use VirtoCommerce.Platform.Security.OpenIddict.ITokenRequestValidator", DiagnosticId = "VC0008", UrlFormat = "https://docs.virtocommerce.org/products/products-virto3-versions/")]
+    public interface IUserSignInValidator
+    {
+        public int Priority { get; set; }
+
+        Task<IList<TokenLoginResponse>> ValidateUserAsync(SignInValidatorContext context);
+    }
+}