diff --git a/Govor.API.Tests/IntegrationTests/EF/Repositories/MediaAttachmentsTests.cs b/Govor.API.Tests/IntegrationTests/EF/Repositories/MediaAttachmentsTests.cs
new file mode 100644
index 0000000..c017e03
--- /dev/null
+++ b/Govor.API.Tests/IntegrationTests/EF/Repositories/MediaAttachmentsTests.cs
@@ -0,0 +1,103 @@
+using AutoFixture;
+using Govor.Core.Infrastructure.Validators;
+using Govor.Core.Models;
+using Govor.Data;
+using Govor.Data.Repositories;
+using Govor.Data.Repositories.Exceptions;
+using Microsoft.EntityFrameworkCore;
+
+namespace Govor.API.Tests.IntegrationTests.EF.Repositories;
+
+[TestFixture]
+public class MediaAttachmentsTests
+{
+    private Fixture _fixture;
+    private DbContextOptions<GovorDbContext> _options;
+    private readonly IObjectValidator<MediaAttachments> _validator = new MediaAttachmentsValidator();
+    private int _testIteration = 0;
+
+    [SetUp]
+    public void SetUp()
+    {
+        _testIteration += 1;
+        
+        _fixture = new Fixture();
+
+        _fixture.Behaviors
+            .OfType<ThrowingRecursionBehavior>()
+            .ToList()
+            .ForEach(b => _fixture.Behaviors.Remove(b));
+
+        _fixture.Behaviors.Add(new OmitOnRecursionBehavior());
+
+        _options = new DbContextOptionsBuilder<GovorDbContext>()
+            .UseInMemoryDatabase(databaseName: $"DbGovor_{nameof(MediaAttachmentsTests)}_{_testIteration}")
+            .Options;
+    }
+    
+    [Test]
+    public async Task Given_NotEmptySetDb_When_GetAll_Then_ReturnAllAttachments()
+    {
+        // Arrange
+        var random = new Random();
+        var attachments = _fixture.CreateMany<MediaAttachments>(random.Next(2, 10)).ToList();
+
+        await using var context = new GovorDbContext(_options);
+        var attachmentsRepository = new MediaAttachmentsRepository(context, _validator);
+
+        context.MediaAttachments.AddRange(attachments);
+        await context.SaveChangesAsync();
+
+        // Act 
+
+        var result = await attachmentsRepository.GetAllAsync();
+
+        // Assert 
+        Assert.That(result, Is.Not.Null);
+        Assert.That(result.Count, Is.EqualTo(attachments.Count));
+        Assert.That(result, Is.EquivalentTo(attachments));
+    }
+    
+    [Test]
+    public void Given_EmptySetDb_When_GetAll_Should_Throw_NotFoundException()
+    {
+        // Arrange 
+        using var context = new GovorDbContext(_options);
+        var mediaAttachments = new MediaAttachmentsRepository(context, _validator);
+        // Act & Assert 
+        Assert.ThrowsAsync<NotFoundException>(async () => await mediaAttachments.GetAllAsync());
+    }
+    
+    [Test]
+    public async Task Given_ValidMessageId_When_GetAllByMessageId_Then_ReturnAllAttachments()
+    {
+        // Arrange
+        var random = new Random();
+        var attachments = _fixture.CreateMany<MediaAttachments>(random.Next(2, 10)).ToList();
+
+        await using var context = new GovorDbContext(_options);
+        var attachmentsRepository = new MediaAttachmentsRepository(context, _validator);
+
+        context.MediaAttachments.AddRange(attachments);
+        await context.SaveChangesAsync();
+
+        // Act 
+        var result = await attachmentsRepository.GetAllByMessageId(attachments.First().MessageId);
+        
+        // Assert 
+        Assert.That(result, Is.Not.Null);
+        Assert.That(result.Count, Is.EqualTo(1));
+        Assert.That(result.First(), Is.EqualTo(attachments.First()));
+    }
+
+    [Test]
+    public async Task Given_InvalidMessageId_When_GetAllByMessageId_Should_Throw_NotFoundByKeyException()
+    {
+        // Arrange
+        await using var context = new GovorDbContext(_options);
+        var attachmentsRepository = new MediaAttachmentsRepository(context, _validator);
+        
+        // Act & Assert 
+        Assert.ThrowsAsync<NotFoundByKeyException<Guid>>(async () => await attachmentsRepository.GetAllByMessageId(_fixture.Create<Guid>()));
+    }
+}
\ No newline at end of file
diff --git a/Govor.Core/Infrastructure/Validators/MediaAttachmentsValidator.cs b/Govor.Core/Infrastructure/Validators/MediaAttachmentsValidator.cs
new file mode 100644
index 0000000..fc20e82
--- /dev/null
+++ b/Govor.Core/Infrastructure/Validators/MediaAttachmentsValidator.cs
@@ -0,0 +1,42 @@
+using Govor.Core.Models;
+using Exception = System.Exception;
+
+namespace Govor.Core.Infrastructure.Validators;
+
+public class MediaAttachmentsValidator : IObjectValidator<MediaAttachments>
+{
+    public void Validate(MediaAttachments attachments)
+    {
+        try
+        {
+            if (attachments is null)
+                throw new ArgumentNullException(nameof(attachments));
+            if(attachments.Id == Guid.Empty)
+                throw new ArgumentException("Id cannot be empty", nameof(attachments));
+            if(attachments.MessageId == Guid.Empty)
+                throw new ArgumentException("MessageId cannot be empty", nameof(attachments));
+            if(string.IsNullOrWhiteSpace(attachments.FilePath))
+                throw new ArgumentException("File path cannot be empty", nameof(attachments));
+            if(string.IsNullOrWhiteSpace(attachments.EncryptedKey))
+                throw new ArgumentException("Encrypted key cannot be empty", nameof(attachments));
+        }
+        catch (Exception ex)
+        {
+            throw new InvalidObjectException<MediaAttachments>(ex);
+        }
+        
+    }
+
+    public bool TryValidate(MediaAttachments attachments)
+    {
+        try
+        {
+            Validate(attachments);
+            return true;
+        }
+        catch (Exception)
+        {
+            return false;
+        }
+    }
+}
\ No newline at end of file
diff --git a/Govor.Core/Models/MediaAttachments.cs b/Govor.Core/Models/MediaAttachments.cs
index df65431..bc5b42c 100644
--- a/Govor.Core/Models/MediaAttachments.cs
+++ b/Govor.Core/Models/MediaAttachments.cs
@@ -11,6 +11,18 @@ public class MediaAttachments
 
     public string? EncryptedKey { get; set; } 
     public Message Message { get; set; } = null!;
+    
+    public override bool Equals(object? obj)
+    {
+        if (obj is not MediaAttachments other) return false;
+
+        return Id == other.Id &&
+               MessageId == other.MessageId &&
+               EncryptedKey == other.EncryptedKey &&
+               Type == other.Type && 
+               FilePath == other.FilePath &&
+               MimeType == other.MimeType;
+    }
 }
 
 public enum MediaType
diff --git a/Govor.Data/Repositories/MediaAttachmentsRepository.cs b/Govor.Data/Repositories/MediaAttachmentsRepository.cs
index 8707fe9..cc18cd8 100644
--- a/Govor.Data/Repositories/MediaAttachmentsRepository.cs
+++ b/Govor.Data/Repositories/MediaAttachmentsRepository.cs
@@ -26,9 +26,13 @@ public class MediaAttachmentsRepository : IMediaAttachmentsRepository
             .ToListOrThrowIfEmpty(new NotFoundException("No media attachments found."));
     }
 
-    public Task<List<MediaAttachments>> GetAllByMessageId(Guid messageId)
+    public async Task<List<MediaAttachments>> GetAllByMessageId(Guid messageId)
     {
-        throw new NotImplementedException();
+        return await _context.MediaAttachments
+            .AsNoTracking()
+            .Include(ma => ma.Message)
+            .Where(m => m.MessageId == messageId)
+            .ToListOrThrowIfEmpty(new NotFoundByKeyException<Guid>(messageId, "No media attachments found by given message Id"));
     }
 
     public Task AddAsync(MediaAttachments mediaAttachments)