diff --git a/src/LinkDotNet.Blog.Domain/BlogPost.cs b/src/LinkDotNet.Blog.Domain/BlogPost.cs
index 9dbfd07e..cb3866d2 100644
--- a/src/LinkDotNet.Blog.Domain/BlogPost.cs
+++ b/src/LinkDotNet.Blog.Domain/BlogPost.cs
@@ -4,7 +4,7 @@
 
 namespace LinkDotNet.Blog.Domain;
 
-public class BlogPost : Entity
+public sealed class BlogPost : Entity
 {
     private BlogPost()
     {
@@ -24,7 +24,7 @@ private BlogPost()
 
     public DateTime? ScheduledPublishDate { get; private set; }
 
-    public virtual ICollection<Tag> Tags { get; private set; }
+    public ICollection<Tag> Tags { get; private set; }
 
     public bool IsPublished { get; private set; }
 
diff --git a/src/LinkDotNet.Blog.Domain/Introduction.cs b/src/LinkDotNet.Blog.Domain/Introduction.cs
index d7664415..d1c5e06c 100644
--- a/src/LinkDotNet.Blog.Domain/Introduction.cs
+++ b/src/LinkDotNet.Blog.Domain/Introduction.cs
@@ -1,6 +1,6 @@
 namespace LinkDotNet.Blog.Domain;
 
-public record Introduction
+public sealed record Introduction
 {
     public string BackgroundUrl { get; init; }
 
diff --git a/src/LinkDotNet.Blog.Domain/ProficiencyLevel.cs b/src/LinkDotNet.Blog.Domain/ProficiencyLevel.cs
index b1dcdeea..f5933949 100644
--- a/src/LinkDotNet.Blog.Domain/ProficiencyLevel.cs
+++ b/src/LinkDotNet.Blog.Domain/ProficiencyLevel.cs
@@ -1,6 +1,6 @@
 namespace LinkDotNet.Blog.Domain;
 
-public class ProficiencyLevel : Enumeration<ProficiencyLevel>
+public sealed class ProficiencyLevel : Enumeration<ProficiencyLevel>
 {
     public static readonly ProficiencyLevel Familiar = new(nameof(Familiar));
     public static readonly ProficiencyLevel Proficient = new(nameof(Proficient));
diff --git a/src/LinkDotNet.Blog.Domain/ProfileInformation.cs b/src/LinkDotNet.Blog.Domain/ProfileInformation.cs
index 6cee9ecc..a084ca74 100644
--- a/src/LinkDotNet.Blog.Domain/ProfileInformation.cs
+++ b/src/LinkDotNet.Blog.Domain/ProfileInformation.cs
@@ -1,6 +1,6 @@
 namespace LinkDotNet.Blog.Domain;
 
-public record ProfileInformation
+public sealed record ProfileInformation
 {
     public string Name { get; init; }
 
diff --git a/src/LinkDotNet.Blog.Domain/ProfileInformationEntry.cs b/src/LinkDotNet.Blog.Domain/ProfileInformationEntry.cs
index 20b73a89..c4a05c8a 100644
--- a/src/LinkDotNet.Blog.Domain/ProfileInformationEntry.cs
+++ b/src/LinkDotNet.Blog.Domain/ProfileInformationEntry.cs
@@ -4,7 +4,7 @@
 namespace LinkDotNet.Blog.Domain;
 
 [DebuggerDisplay("{Content} with sort order {SortOrder}")]
-public class ProfileInformationEntry : Entity
+public sealed class ProfileInformationEntry : Entity
 {
     private ProfileInformationEntry()
     {
diff --git a/src/LinkDotNet.Blog.Domain/Skill.cs b/src/LinkDotNet.Blog.Domain/Skill.cs
index 2596d9f6..69cfa392 100644
--- a/src/LinkDotNet.Blog.Domain/Skill.cs
+++ b/src/LinkDotNet.Blog.Domain/Skill.cs
@@ -2,7 +2,7 @@
 
 namespace LinkDotNet.Blog.Domain;
 
-public class Skill : Entity
+public sealed class Skill : Entity
 {
     private Skill()
     {
diff --git a/src/LinkDotNet.Blog.Domain/Social.cs b/src/LinkDotNet.Blog.Domain/Social.cs
index 0c43fa8a..f843d248 100644
--- a/src/LinkDotNet.Blog.Domain/Social.cs
+++ b/src/LinkDotNet.Blog.Domain/Social.cs
@@ -1,6 +1,6 @@
 namespace LinkDotNet.Blog.Domain;
 
-public record Social
+public sealed record Social
 {
     public string LinkedinAccountUrl { get; init; }
 
diff --git a/src/LinkDotNet.Blog.Domain/Tag.cs b/src/LinkDotNet.Blog.Domain/Tag.cs
index 2573a26b..6ad5f5eb 100644
--- a/src/LinkDotNet.Blog.Domain/Tag.cs
+++ b/src/LinkDotNet.Blog.Domain/Tag.cs
@@ -2,7 +2,7 @@
 
 namespace LinkDotNet.Blog.Domain;
 
-public class Tag
+public sealed class Tag
 {
     private Tag()
     {
diff --git a/src/LinkDotNet.Blog.Domain/Talk.cs b/src/LinkDotNet.Blog.Domain/Talk.cs
index ad79b722..f8702b04 100644
--- a/src/LinkDotNet.Blog.Domain/Talk.cs
+++ b/src/LinkDotNet.Blog.Domain/Talk.cs
@@ -2,7 +2,7 @@
 
 namespace LinkDotNet.Blog.Domain;
 
-public class Talk : Entity
+public sealed class Talk : Entity
 {
     private Talk()
     {
diff --git a/src/LinkDotNet.Blog.Domain/UserRecord.cs b/src/LinkDotNet.Blog.Domain/UserRecord.cs
index df6b2dce..e2c1ed9d 100644
--- a/src/LinkDotNet.Blog.Domain/UserRecord.cs
+++ b/src/LinkDotNet.Blog.Domain/UserRecord.cs
@@ -2,7 +2,7 @@
 
 namespace LinkDotNet.Blog.Domain;
 
-public class UserRecord : Entity
+public sealed class UserRecord : Entity
 {
     public int UserIdentifierHash { get; set; }
 
diff --git a/src/LinkDotNet.Blog.Infrastructure/Persistence/PersistenceProvider.cs b/src/LinkDotNet.Blog.Infrastructure/Persistence/PersistenceProvider.cs
index 6c3e16f4..2c3122aa 100644
--- a/src/LinkDotNet.Blog.Infrastructure/Persistence/PersistenceProvider.cs
+++ b/src/LinkDotNet.Blog.Infrastructure/Persistence/PersistenceProvider.cs
@@ -2,7 +2,7 @@
 
 namespace LinkDotNet.Blog.Infrastructure.Persistence;
 
-public class PersistenceProvider : Enumeration<PersistenceProvider>
+public sealed class PersistenceProvider : Enumeration<PersistenceProvider>
 {
     public static readonly PersistenceProvider SqlServer = new(nameof(SqlServer));
     public static readonly PersistenceProvider Sqlite = new(nameof(Sqlite));
@@ -10,7 +10,7 @@ public class PersistenceProvider : Enumeration<PersistenceProvider>
     public static readonly PersistenceProvider InMemory = new(nameof(InMemory));
     public static readonly PersistenceProvider MySql = new(nameof(MySql));
 
-    protected PersistenceProvider(string key)
+    private PersistenceProvider(string key)
         : base(key)
     {
     }
diff --git a/src/LinkDotNet.Blog.Infrastructure/Persistence/Sql/Mapping/BlogPostConfiguration.cs b/src/LinkDotNet.Blog.Infrastructure/Persistence/Sql/Mapping/BlogPostConfiguration.cs
index 294ea77e..7b9046a2 100644
--- a/src/LinkDotNet.Blog.Infrastructure/Persistence/Sql/Mapping/BlogPostConfiguration.cs
+++ b/src/LinkDotNet.Blog.Infrastructure/Persistence/Sql/Mapping/BlogPostConfiguration.cs
@@ -4,7 +4,7 @@
 
 namespace LinkDotNet.Blog.Infrastructure.Persistence.Sql.Mapping;
 
-public class BlogPostConfiguration : IEntityTypeConfiguration<BlogPost>
+public sealed class BlogPostConfiguration : IEntityTypeConfiguration<BlogPost>
 {
     public void Configure(EntityTypeBuilder<BlogPost> builder)
     {
diff --git a/src/LinkDotNet.Blog.Infrastructure/Persistence/Sql/Mapping/ProfileInformationEntryConfiguration.cs b/src/LinkDotNet.Blog.Infrastructure/Persistence/Sql/Mapping/ProfileInformationEntryConfiguration.cs
index 1fc75f0b..4cf81b17 100644
--- a/src/LinkDotNet.Blog.Infrastructure/Persistence/Sql/Mapping/ProfileInformationEntryConfiguration.cs
+++ b/src/LinkDotNet.Blog.Infrastructure/Persistence/Sql/Mapping/ProfileInformationEntryConfiguration.cs
@@ -4,7 +4,7 @@
 
 namespace LinkDotNet.Blog.Infrastructure.Persistence.Sql.Mapping;
 
-public class ProfileInformationEntryConfiguration : IEntityTypeConfiguration<ProfileInformationEntry>
+public sealed class ProfileInformationEntryConfiguration : IEntityTypeConfiguration<ProfileInformationEntry>
 {
     public void Configure(EntityTypeBuilder<ProfileInformationEntry> builder)
     {
diff --git a/src/LinkDotNet.Blog.Infrastructure/Persistence/Sql/Mapping/SkillConfiguration.cs b/src/LinkDotNet.Blog.Infrastructure/Persistence/Sql/Mapping/SkillConfiguration.cs
index 1569135a..6331c67a 100644
--- a/src/LinkDotNet.Blog.Infrastructure/Persistence/Sql/Mapping/SkillConfiguration.cs
+++ b/src/LinkDotNet.Blog.Infrastructure/Persistence/Sql/Mapping/SkillConfiguration.cs
@@ -4,7 +4,7 @@
 
 namespace LinkDotNet.Blog.Infrastructure.Persistence.Sql.Mapping;
 
-public class SkillConfiguration : IEntityTypeConfiguration<Skill>
+public sealed class SkillConfiguration : IEntityTypeConfiguration<Skill>
 {
     public void Configure(EntityTypeBuilder<Skill> builder)
     {
diff --git a/src/LinkDotNet.Blog.Infrastructure/Persistence/Sql/Mapping/TagsConfiguration.cs b/src/LinkDotNet.Blog.Infrastructure/Persistence/Sql/Mapping/TagsConfiguration.cs
index 38bba97e..09a76f7c 100644
--- a/src/LinkDotNet.Blog.Infrastructure/Persistence/Sql/Mapping/TagsConfiguration.cs
+++ b/src/LinkDotNet.Blog.Infrastructure/Persistence/Sql/Mapping/TagsConfiguration.cs
@@ -4,7 +4,7 @@
 
 namespace LinkDotNet.Blog.Infrastructure.Persistence.Sql.Mapping;
 
-public class TagsConfiguration : IEntityTypeConfiguration<Tag>
+public sealed class TagsConfiguration : IEntityTypeConfiguration<Tag>
 {
     public void Configure(EntityTypeBuilder<Tag> builder)
     {
diff --git a/src/LinkDotNet.Blog.Infrastructure/Persistence/Sql/Mapping/TalkConfiguration.cs b/src/LinkDotNet.Blog.Infrastructure/Persistence/Sql/Mapping/TalkConfiguration.cs
index ab6283ee..d1c61cea 100644
--- a/src/LinkDotNet.Blog.Infrastructure/Persistence/Sql/Mapping/TalkConfiguration.cs
+++ b/src/LinkDotNet.Blog.Infrastructure/Persistence/Sql/Mapping/TalkConfiguration.cs
@@ -4,7 +4,7 @@
 
 namespace LinkDotNet.Blog.Infrastructure.Persistence.Sql.Mapping;
 
-public class TalkConfiguration : IEntityTypeConfiguration<Talk>
+public sealed class TalkConfiguration : IEntityTypeConfiguration<Talk>
 {
     public void Configure(EntityTypeBuilder<Talk> builder)
     {
diff --git a/src/LinkDotNet.Blog.Infrastructure/Persistence/Sql/Mapping/UserRecordConfiguration.cs b/src/LinkDotNet.Blog.Infrastructure/Persistence/Sql/Mapping/UserRecordConfiguration.cs
index 382c047b..b4a71334 100644
--- a/src/LinkDotNet.Blog.Infrastructure/Persistence/Sql/Mapping/UserRecordConfiguration.cs
+++ b/src/LinkDotNet.Blog.Infrastructure/Persistence/Sql/Mapping/UserRecordConfiguration.cs
@@ -4,7 +4,7 @@
 
 namespace LinkDotNet.Blog.Infrastructure.Persistence.Sql.Mapping;
 
-public class UserRecordConfiguration : IEntityTypeConfiguration<UserRecord>
+public sealed class UserRecordConfiguration : IEntityTypeConfiguration<UserRecord>
 {
     public void Configure(EntityTypeBuilder<UserRecord> builder)
     {
diff --git a/src/LinkDotNet.Blog.Web/AppConfiguration.cs b/src/LinkDotNet.Blog.Web/AppConfiguration.cs
index b069b1df..a80ca417 100644
--- a/src/LinkDotNet.Blog.Web/AppConfiguration.cs
+++ b/src/LinkDotNet.Blog.Web/AppConfiguration.cs
@@ -3,7 +3,7 @@
 
 namespace LinkDotNet.Blog.Web;
 
-public record AppConfiguration
+public sealed record AppConfiguration
 {
     public string BlogName { get; init; }
 
diff --git a/src/LinkDotNet.Blog.Web/Authentication/Auth0/Auth0Information.cs b/src/LinkDotNet.Blog.Web/Authentication/Auth0/Auth0Information.cs
index cc60ee64..30bcb7a3 100644
--- a/src/LinkDotNet.Blog.Web/Authentication/Auth0/Auth0Information.cs
+++ b/src/LinkDotNet.Blog.Web/Authentication/Auth0/Auth0Information.cs
@@ -1,6 +1,6 @@
 namespace LinkDotNet.Blog.Web.Authentication.Auth0;
 
-public record Auth0Information
+public sealed record Auth0Information
 {
     public string Domain { get; init; }
 
diff --git a/src/LinkDotNet.Blog.Web/Authentication/Auth0/Auth0LoginManager.cs b/src/LinkDotNet.Blog.Web/Authentication/Auth0/Auth0LoginManager.cs
index c71f7ff2..df7fb700 100644
--- a/src/LinkDotNet.Blog.Web/Authentication/Auth0/Auth0LoginManager.cs
+++ b/src/LinkDotNet.Blog.Web/Authentication/Auth0/Auth0LoginManager.cs
@@ -6,7 +6,7 @@
 
 namespace LinkDotNet.Blog.Web.Authentication.Auth0;
 
-public class Auth0LoginManager : ILoginManager
+public sealed class Auth0LoginManager : ILoginManager
 {
     private readonly HttpContext httpContext;
 
diff --git a/src/LinkDotNet.Blog.Web/Authentication/Dummy/DummyLoginManager.cs b/src/LinkDotNet.Blog.Web/Authentication/Dummy/DummyLoginManager.cs
index ddf7007f..e499c888 100644
--- a/src/LinkDotNet.Blog.Web/Authentication/Dummy/DummyLoginManager.cs
+++ b/src/LinkDotNet.Blog.Web/Authentication/Dummy/DummyLoginManager.cs
@@ -7,7 +7,7 @@
 
 namespace LinkDotNet.Blog.Web.Authentication.Dummy;
 
-public class DummyLoginManager : ILoginManager
+public sealed class DummyLoginManager : ILoginManager
 {
     private readonly HttpContext context;
 
diff --git a/src/LinkDotNet.Blog.Web/Controller/RssFeedController.cs b/src/LinkDotNet.Blog.Web/Controller/RssFeedController.cs
index a39b6c8a..43532e3d 100644
--- a/src/LinkDotNet.Blog.Web/Controller/RssFeedController.cs
+++ b/src/LinkDotNet.Blog.Web/Controller/RssFeedController.cs
@@ -14,7 +14,7 @@
 
 namespace LinkDotNet.Blog.Web.Controller;
 
-public class RssFeedController : ControllerBase
+public sealed class RssFeedController : ControllerBase
 {
     private readonly AppConfiguration appConfiguration;
     private readonly IRepository<BlogPost> blogPostRepository;
diff --git a/src/LinkDotNet.Blog.Web/Features/AboutMe/Components/Skill/AddSkillModel.cs b/src/LinkDotNet.Blog.Web/Features/AboutMe/Components/Skill/AddSkillModel.cs
index 609628f8..f894c4a2 100644
--- a/src/LinkDotNet.Blog.Web/Features/AboutMe/Components/Skill/AddSkillModel.cs
+++ b/src/LinkDotNet.Blog.Web/Features/AboutMe/Components/Skill/AddSkillModel.cs
@@ -3,7 +3,7 @@
 
 namespace LinkDotNet.Blog.Web.Features.AboutMe.Components.Skill;
 
-public class AddSkillModel
+public sealed class AddSkillModel
 {
     [Required]
     public string Skill { get; set; }
diff --git a/src/LinkDotNet.Blog.Web/Features/AboutMe/Components/Talk/AddTalkEntryModel.cs b/src/LinkDotNet.Blog.Web/Features/AboutMe/Components/Talk/AddTalkEntryModel.cs
index 7ef89ed5..181bb7fa 100644
--- a/src/LinkDotNet.Blog.Web/Features/AboutMe/Components/Talk/AddTalkEntryModel.cs
+++ b/src/LinkDotNet.Blog.Web/Features/AboutMe/Components/Talk/AddTalkEntryModel.cs
@@ -3,7 +3,7 @@
 
 namespace LinkDotNet.Blog.Web.Features.AboutMe.Components.Talk;
 
-public class AddTalkEntryModel
+public sealed class AddTalkEntryModel
 {
     [Required]
     [MaxLength(256)]
diff --git a/src/LinkDotNet.Blog.Web/Features/Admin/BlogPostEditor/Components/CreateNewModel.cs b/src/LinkDotNet.Blog.Web/Features/Admin/BlogPostEditor/Components/CreateNewModel.cs
index 8f37e135..213e1579 100644
--- a/src/LinkDotNet.Blog.Web/Features/Admin/BlogPostEditor/Components/CreateNewModel.cs
+++ b/src/LinkDotNet.Blog.Web/Features/Admin/BlogPostEditor/Components/CreateNewModel.cs
@@ -4,7 +4,7 @@
 
 namespace LinkDotNet.Blog.Web.Features.Admin.BlogPostEditor.Components;
 
-public class CreateNewModel
+public sealed class CreateNewModel
 {
     private DateTime originalUpdatedDate;
     private string id;
diff --git a/src/LinkDotNet.Blog.Web/Features/Admin/BlogPostEditor/Services/FileProcessor.cs b/src/LinkDotNet.Blog.Web/Features/Admin/BlogPostEditor/Services/FileProcessor.cs
index fe2e4704..0e43159f 100644
--- a/src/LinkDotNet.Blog.Web/Features/Admin/BlogPostEditor/Services/FileProcessor.cs
+++ b/src/LinkDotNet.Blog.Web/Features/Admin/BlogPostEditor/Services/FileProcessor.cs
@@ -4,7 +4,7 @@
 
 namespace LinkDotNet.Blog.Web.Features.Admin.BlogPostEditor.Services;
 
-public class FileProcessor : IFileProcessor
+public sealed class FileProcessor : IFileProcessor
 {
     public async Task<string> GetContentAsync(IBrowserFile file)
     {
diff --git a/src/LinkDotNet.Blog.Web/Features/Admin/Dashboard/Services/DashboardData.cs b/src/LinkDotNet.Blog.Web/Features/Admin/Dashboard/Services/DashboardData.cs
index d37951e6..39e5c31d 100644
--- a/src/LinkDotNet.Blog.Web/Features/Admin/Dashboard/Services/DashboardData.cs
+++ b/src/LinkDotNet.Blog.Web/Features/Admin/Dashboard/Services/DashboardData.cs
@@ -1,6 +1,6 @@
 namespace LinkDotNet.Blog.Web.Features.Admin.Dashboard.Services;
 
-public class DashboardData
+public sealed class DashboardData
 {
     public int TotalAmountOfUsers { get; init; }
 
diff --git a/src/LinkDotNet.Blog.Web/Features/Admin/Dashboard/Services/DashboardService.cs b/src/LinkDotNet.Blog.Web/Features/Admin/Dashboard/Services/DashboardService.cs
index 2bbea4e2..187bfae8 100644
--- a/src/LinkDotNet.Blog.Web/Features/Admin/Dashboard/Services/DashboardService.cs
+++ b/src/LinkDotNet.Blog.Web/Features/Admin/Dashboard/Services/DashboardService.cs
@@ -6,7 +6,7 @@
 
 namespace LinkDotNet.Blog.Web.Features.Admin.Dashboard.Services;
 
-public class DashboardService : IDashboardService
+public sealed class DashboardService : IDashboardService
 {
     private readonly IRepository<UserRecord> userRecordRepository;
 
diff --git a/src/LinkDotNet.Blog.Web/Features/Admin/Dashboard/Services/VisitCountPageData.cs b/src/LinkDotNet.Blog.Web/Features/Admin/Dashboard/Services/VisitCountPageData.cs
index 126532d6..157df40c 100644
--- a/src/LinkDotNet.Blog.Web/Features/Admin/Dashboard/Services/VisitCountPageData.cs
+++ b/src/LinkDotNet.Blog.Web/Features/Admin/Dashboard/Services/VisitCountPageData.cs
@@ -1,6 +1,6 @@
 namespace LinkDotNet.Blog.Web.Features.Admin.Dashboard.Services;
 
-public record VisitCountPageData
+public sealed record VisitCountPageData
 {
     public string Id { get; init; }
 
diff --git a/src/LinkDotNet.Blog.Web/Features/Admin/Sitemap/Services/SitemapService.cs b/src/LinkDotNet.Blog.Web/Features/Admin/Sitemap/Services/SitemapService.cs
index 5a5779fc..10be3635 100644
--- a/src/LinkDotNet.Blog.Web/Features/Admin/Sitemap/Services/SitemapService.cs
+++ b/src/LinkDotNet.Blog.Web/Features/Admin/Sitemap/Services/SitemapService.cs
@@ -9,7 +9,7 @@
 
 namespace LinkDotNet.Blog.Web.Features.Admin.Sitemap.Services;
 
-public class SitemapService : ISitemapService
+public sealed class SitemapService : ISitemapService
 {
     private readonly IRepository<BlogPost> repository;
     private readonly NavigationManager navigationManager;
diff --git a/src/LinkDotNet.Blog.Web/Features/Admin/Sitemap/Services/SitemapUrl.cs b/src/LinkDotNet.Blog.Web/Features/Admin/Sitemap/Services/SitemapUrl.cs
index b1f3d67e..540e2d26 100644
--- a/src/LinkDotNet.Blog.Web/Features/Admin/Sitemap/Services/SitemapUrl.cs
+++ b/src/LinkDotNet.Blog.Web/Features/Admin/Sitemap/Services/SitemapUrl.cs
@@ -3,7 +3,7 @@
 namespace LinkDotNet.Blog.Web.Features.Admin.Sitemap.Services;
 
 [XmlRoot(ElementName = "url")]
-public class SitemapUrl
+public sealed class SitemapUrl
 {
     [XmlElement(ElementName = "loc")]
     public string Location { get; set; }
diff --git a/src/LinkDotNet.Blog.Web/Features/Admin/Sitemap/Services/SitemapUrlSet.cs b/src/LinkDotNet.Blog.Web/Features/Admin/Sitemap/Services/SitemapUrlSet.cs
index a182cf5e..8f5c8429 100644
--- a/src/LinkDotNet.Blog.Web/Features/Admin/Sitemap/Services/SitemapUrlSet.cs
+++ b/src/LinkDotNet.Blog.Web/Features/Admin/Sitemap/Services/SitemapUrlSet.cs
@@ -4,7 +4,7 @@
 namespace LinkDotNet.Blog.Web.Features.Admin.Sitemap.Services;
 
 [XmlRoot(ElementName = "urlset", Namespace = "http://www.sitemaps.org/schemas/sitemap/0.9")]
-public class SitemapUrlSet
+public sealed class SitemapUrlSet
 {
     [XmlElement(ElementName = "url")]
     public List<SitemapUrl> Urls { get; set; } = new();
diff --git a/src/LinkDotNet.Blog.Web/Features/Admin/Sitemap/Services/XmlFileWriter.cs b/src/LinkDotNet.Blog.Web/Features/Admin/Sitemap/Services/XmlFileWriter.cs
index 87af8a19..7dd7bb42 100644
--- a/src/LinkDotNet.Blog.Web/Features/Admin/Sitemap/Services/XmlFileWriter.cs
+++ b/src/LinkDotNet.Blog.Web/Features/Admin/Sitemap/Services/XmlFileWriter.cs
@@ -5,7 +5,7 @@
 
 namespace LinkDotNet.Blog.Web.Features.Admin.Sitemap.Services;
 
-public class XmlFileWriter : IXmlFileWriter
+public sealed class XmlFileWriter : IXmlFileWriter
 {
     public async Task WriteObjectToXmlFileAsync<T>(T objectToSave, string fileName)
     {
diff --git a/src/LinkDotNet.Blog.Web/Features/BlogPostPublisher.cs b/src/LinkDotNet.Blog.Web/Features/BlogPostPublisher.cs
index bc82be29..baf66663 100644
--- a/src/LinkDotNet.Blog.Web/Features/BlogPostPublisher.cs
+++ b/src/LinkDotNet.Blog.Web/Features/BlogPostPublisher.cs
@@ -12,7 +12,7 @@
 
 namespace LinkDotNet.Blog.Web.Features;
 
-public class BlogPostPublisher : BackgroundService
+public sealed class BlogPostPublisher : BackgroundService
 {
     private readonly IServiceProvider serviceProvider;
     private readonly ILogger<BlogPostPublisher> logger;
diff --git a/src/LinkDotNet.Blog.Web/Features/Services/LocalStorageService.cs b/src/LinkDotNet.Blog.Web/Features/Services/LocalStorageService.cs
index 45a0c90d..ab917ef2 100644
--- a/src/LinkDotNet.Blog.Web/Features/Services/LocalStorageService.cs
+++ b/src/LinkDotNet.Blog.Web/Features/Services/LocalStorageService.cs
@@ -3,7 +3,7 @@
 
 namespace LinkDotNet.Blog.Web.Features.Services;
 
-public class LocalStorageService : ILocalStorageService
+public sealed class LocalStorageService : ILocalStorageService
 {
     private readonly ProtectedLocalStorage localStorage;
 
diff --git a/src/LinkDotNet.Blog.Web/Features/Services/SortOrderCalculator.cs b/src/LinkDotNet.Blog.Web/Features/Services/SortOrderCalculator.cs
index e2da3ecb..03694e1e 100644
--- a/src/LinkDotNet.Blog.Web/Features/Services/SortOrderCalculator.cs
+++ b/src/LinkDotNet.Blog.Web/Features/Services/SortOrderCalculator.cs
@@ -3,7 +3,7 @@
 
 namespace LinkDotNet.Blog.Web.Features.Services;
 
-public class SortOrderCalculator : ISortOrderCalculator
+public sealed class SortOrderCalculator : ISortOrderCalculator
 {
     public int GetSortOrder(ProfileInformationEntry target, IEnumerable<ProfileInformationEntry> all)
     {
diff --git a/src/LinkDotNet.Blog.Web/Features/Services/UserRecordService.cs b/src/LinkDotNet.Blog.Web/Features/Services/UserRecordService.cs
index ba30e75c..969aca33 100644
--- a/src/LinkDotNet.Blog.Web/Features/Services/UserRecordService.cs
+++ b/src/LinkDotNet.Blog.Web/Features/Services/UserRecordService.cs
@@ -8,7 +8,7 @@
 
 namespace LinkDotNet.Blog.Web.Features.Services;
 
-public class UserRecordService : IUserRecordService
+public sealed class UserRecordService : IUserRecordService
 {
     private readonly IRepository<UserRecord> userRecordRepository;
     private readonly NavigationManager navigationManager;
diff --git a/src/LinkDotNet.Blog.Web/Features/ShowBlogPost/Components/DisqusConfiguration.cs b/src/LinkDotNet.Blog.Web/Features/ShowBlogPost/Components/DisqusConfiguration.cs
index b2232e8e..18cf1072 100644
--- a/src/LinkDotNet.Blog.Web/Features/ShowBlogPost/Components/DisqusConfiguration.cs
+++ b/src/LinkDotNet.Blog.Web/Features/ShowBlogPost/Components/DisqusConfiguration.cs
@@ -1,6 +1,6 @@
 namespace LinkDotNet.Blog.Web.Features.ShowBlogPost.Components;
 
-public record DisqusConfiguration
+public sealed record DisqusConfiguration
 {
     public string Shortname { get; init; }
 }
\ No newline at end of file
diff --git a/src/LinkDotNet.Blog.Web/Features/ShowBlogPost/Components/GiscusConfiguration.cs b/src/LinkDotNet.Blog.Web/Features/ShowBlogPost/Components/GiscusConfiguration.cs
index 743feb88..4bdc6367 100644
--- a/src/LinkDotNet.Blog.Web/Features/ShowBlogPost/Components/GiscusConfiguration.cs
+++ b/src/LinkDotNet.Blog.Web/Features/ShowBlogPost/Components/GiscusConfiguration.cs
@@ -1,6 +1,6 @@
 namespace LinkDotNet.Blog.Web.Features.ShowBlogPost.Components;
 
-public record GiscusConfiguration
+public sealed record GiscusConfiguration
 {
     public string Repository { get; init; }
 
diff --git a/src/LinkDotNet.Blog.Web/Pages/Error.cshtml.cs b/src/LinkDotNet.Blog.Web/Pages/Error.cshtml.cs
index 66e274a8..f4519ce1 100644
--- a/src/LinkDotNet.Blog.Web/Pages/Error.cshtml.cs
+++ b/src/LinkDotNet.Blog.Web/Pages/Error.cshtml.cs
@@ -6,7 +6,7 @@ namespace LinkDotNet.Blog.Web.Pages;
 
 [ResponseCache(Duration = 0, Location = ResponseCacheLocation.None, NoStore = true)]
 [IgnoreAntiforgeryToken]
-public partial class ErrorModel : PageModel
+public sealed partial class ErrorModel : PageModel
 {
     public string RequestId { get; set; }
 
diff --git a/src/LinkDotNet.Blog.Web/Pages/Login.cshtml.cs b/src/LinkDotNet.Blog.Web/Pages/Login.cshtml.cs
index d2b6b2ca..5b0f520b 100644
--- a/src/LinkDotNet.Blog.Web/Pages/Login.cshtml.cs
+++ b/src/LinkDotNet.Blog.Web/Pages/Login.cshtml.cs
@@ -4,7 +4,7 @@
 
 namespace LinkDotNet.Blog.Web.Pages;
 
-public partial class LoginModel : PageModel
+public sealed partial class LoginModel : PageModel
 {
     private readonly ILoginManager loginManager;
 
diff --git a/src/LinkDotNet.Blog.Web/Pages/Logout.cshtml.cs b/src/LinkDotNet.Blog.Web/Pages/Logout.cshtml.cs
index e8038f48..fd835d93 100644
--- a/src/LinkDotNet.Blog.Web/Pages/Logout.cshtml.cs
+++ b/src/LinkDotNet.Blog.Web/Pages/Logout.cshtml.cs
@@ -4,7 +4,7 @@
 
 namespace LinkDotNet.Blog.Web.Pages;
 
-public partial class LogoutModel : PageModel
+public sealed partial class LogoutModel : PageModel
 {
     private readonly ILoginManager loginManager;
 
diff --git a/tests/LinkDotNet.Blog.IntegrationTests/Web/Features/Admin/Dashboard/Components/VisitCountPerPageTests.cs b/tests/LinkDotNet.Blog.IntegrationTests/Web/Features/Admin/Dashboard/Components/VisitCountPerPageTests.cs
index 0ffbf9ed..e0503d5a 100644
--- a/tests/LinkDotNet.Blog.IntegrationTests/Web/Features/Admin/Dashboard/Components/VisitCountPerPageTests.cs
+++ b/tests/LinkDotNet.Blog.IntegrationTests/Web/Features/Admin/Dashboard/Components/VisitCountPerPageTests.cs
@@ -120,7 +120,7 @@ private async Task SaveBlogPostArticleClicked(string blogPostId, int count)
         await DbContext.SaveChangesAsync();
     }
 
-    private class FilterStubComponent : ComponentBase
+    private sealed class FilterStubComponent : ComponentBase
     {
         [Parameter]
         public EventCallback<Filter> FilterChanged { get; set; }