diff --git a/SapiensDataAPI/Controllers/AuthController.cs b/SapiensDataAPI/Controllers/AuthController.cs
index 800298b..d088eaa 100644
--- a/SapiensDataAPI/Controllers/AuthController.cs
+++ b/SapiensDataAPI/Controllers/AuthController.cs
@@ -24,6 +24,11 @@
 			if (userExists != null) // If user exists
 				return Conflict("Username already exists."); // Return conflict response if username exists
 
+			if (model.Username.Contains("..") || model.Username.Contains('/') || model.Username.Contains('\\'))
+			{
+				return BadRequest("Invalid username. Username cannot contain '..' or '/' or '\\'.");
+			}
+
 			ApplicationUserModel? emailExists = await _userManager.FindByEmailAsync(model.Email); // Check if the email is already in use
 			if (emailExists != null) // If email exists
 				return Conflict("Email is already in use."); // Return conflict response if email exists
diff --git a/SapiensDataAPI/Controllers/EncryptionTestsController.cs b/SapiensDataAPI/Controllers/EncryptionTestsController.cs
deleted file mode 100644
index 5008f4b..0000000
--- a/SapiensDataAPI/Controllers/EncryptionTestsController.cs
+++ /dev/null
@@ -1,98 +0,0 @@
-using Microsoft.AspNetCore.Mvc;
-using Microsoft.EntityFrameworkCore;
-using SapiensDataAPI.Data.DbContextCs;
-using SapiensDataAPI.Models;
-
-namespace SapiensDataAPI.Controllers
-{
-	[Route("api/[controller]")]
-	[ApiController]
-	public class EncryptionTestsController(SapeinsDataDbContext context) : ControllerBase
-	{
-		private readonly SapeinsDataDbContext _context = context;
-
-		// GET: api/EncryptionTests
-		[HttpGet]
-		public async Task<ActionResult<IEnumerable<EncryptionTest>>> GetEncryptionTests()
-		{
-			return await _context.EncryptionTests.ToListAsync();
-		}
-
-		// GET: api/EncryptionTests/5
-		[HttpGet("{id}")]
-		public async Task<ActionResult<EncryptionTest>> GetEncryptionTest(int id)
-		{
-			EncryptionTest? encryptionTest = await _context.EncryptionTests.FindAsync(id);
-
-			if (encryptionTest == null)
-			{
-				return NotFound();
-			}
-
-			return encryptionTest;
-		}
-
-		// PUT: api/EncryptionTests/5
-		// To protect from overposting attacks, see https://go.microsoft.com/fwlink/?linkid=2123754
-		[HttpPut("{id}")]
-		public async Task<IActionResult> PutEncryptionTest(int id, EncryptionTest encryptionTest)
-		{
-			if (id != encryptionTest.Id)
-			{
-				return BadRequest();
-			}
-
-			_context.Entry(encryptionTest).State = EntityState.Modified;
-
-			try
-			{
-				await _context.SaveChangesAsync();
-			}
-			catch (DbUpdateConcurrencyException)
-			{
-				if (!EncryptionTestExists(id))
-				{
-					return NotFound();
-				}
-				else
-				{
-					throw;
-				}
-			}
-
-			return NoContent();
-		}
-
-		// POST: api/EncryptionTests
-		// To protect from overposting attacks, see https://go.microsoft.com/fwlink/?linkid=2123754
-		[HttpPost]
-		public async Task<ActionResult<EncryptionTest>> PostEncryptionTest(EncryptionTest encryptionTest)
-		{
-			_context.EncryptionTests.Add(encryptionTest);
-			await _context.SaveChangesAsync();
-
-			return CreatedAtAction("GetEncryptionTest", new { id = encryptionTest.Id }, encryptionTest);
-		}
-
-		// DELETE: api/EncryptionTests/5
-		[HttpDelete("{id}")]
-		public async Task<IActionResult> DeleteEncryptionTest(int id)
-		{
-			EncryptionTest? encryptionTest = await _context.EncryptionTests.FindAsync(id);
-			if (encryptionTest == null)
-			{
-				return NotFound();
-			}
-
-			_context.EncryptionTests.Remove(encryptionTest);
-			await _context.SaveChangesAsync();
-
-			return NoContent();
-		}
-
-		private bool EncryptionTestExists(int id)
-		{
-			return _context.EncryptionTests.Any(e => e.Id == id);
-		}
-	}
-}
diff --git a/SapiensDataAPI/Controllers/ReceiptsController.cs b/SapiensDataAPI/Controllers/ReceiptsController.cs
index f1cb79c..e2aaebd 100644
--- a/SapiensDataAPI/Controllers/ReceiptsController.cs
+++ b/SapiensDataAPI/Controllers/ReceiptsController.cs
@@ -48,6 +48,11 @@ public async Task<IActionResult> ReceiveJSON([FromBody] ReceiptVailidation recei
 				return StatusCode(500, "Google Drive path doesn't exist in .env file.");
 			}
 
+			if (username.Contains("..") || username.Contains('/') || username.Contains('\\'))
+			{
+				return BadRequest("Invalid username. Username cannot contain '..' or '/' or '\\'.");
+			}
+
 			//var uploadsFolderPath = Path.Combine(Directory.GetCurrentDirectory(), "Data", "SapiensCloud", "src", "media", "UserReceiptUploads", JwtPayload.Sub);
 			string filePath = Path.Combine(googleDrivePath, "SapiensCloud", "media", "user_data", username, "receipts", receiptVailidation.FileMetadata.ReceiptFilename);
 			if (!await Task.Run(() => System.IO.File.Exists(filePath)))
@@ -298,7 +303,7 @@ public async Task<ActionResult<ResReceiptDto>> GetReceipt(int offset = 0)
 			List<ReceiptProduct> productsReceipts = await _context.ReceiptProducts
 				.Where(rp => rp.ReceiptId == receipt.ReceiptId)
 				.ToListAsync();
-			List<int> productsReceiptsProductsIds = productsReceipts.Select(p => p.ProductId).ToList();
+			List<int> productsReceiptsProductsIds = [.. productsReceipts.Select(p => p.ProductId)];
 
 			List<Product> products = await _context.Products
 				.Where(p => productsReceiptsProductsIds.Contains(p.ProductId))
diff --git a/SapiensDataAPI/Data/DbContextCs/SapeinsDataDbContext.cs b/SapiensDataAPI/Data/DbContextCs/SapeinsDataDbContext.cs
index cb7ab2a..b0cb032 100644
--- a/SapiensDataAPI/Data/DbContextCs/SapeinsDataDbContext.cs
+++ b/SapiensDataAPI/Data/DbContextCs/SapeinsDataDbContext.cs
@@ -83,8 +83,6 @@ public SapeinsDataDbContext(DbContextOptions<SapeinsDataDbContext> options, Glob
 
 	public virtual DbSet<ReceiptProduct> ReceiptProducts { get; set; } = null!;
 
-	public virtual DbSet<EncryptionTest> EncryptionTests { get; set; } = null!;
-
 	protected override void OnModelCreating(ModelBuilder builder)
 	{
 		builder.UseEncryption(_provider);
@@ -1198,15 +1196,11 @@ protected override void OnModelCreating(ModelBuilder builder)
 				.HasConstraintName("FK__UserSessi__user___68487DD7");
 		});
 
-		ValueComparer<byte[]> byteArrayComparer = new(
-			(a, b) => a != null && b != null && a.SequenceEqual(b),
-			a => a != null ? a.Aggregate(0, (acc, v) => HashCode.Combine(acc, v)) : 0,
-			a => a != null ? a.ToArray() : Array.Empty<byte>()
-		);
-
-		builder.Entity<EncryptionTest>()
-			.Property(e => e.StreetEncrypted)
-			.Metadata.SetValueComparer(byteArrayComparer);
+		//ValueComparer<byte[]> byteArrayComparer = new(
+		//	(a, b) => a != null && b != null && a.SequenceEqual(b),
+		//	a => a != null ? a.Aggregate(0, (acc, v) => HashCode.Combine(acc, v)) : 0,
+		//	a => a != null ? a.ToArray() : Array.Empty<byte>()
+		//);
 
 		//OnModelCreatingPartial(builder);
 	}
diff --git a/SapiensDataAPI/Models/EncryptionTest.cs b/SapiensDataAPI/Models/EncryptionTest.cs
deleted file mode 100644
index fa98edc..0000000
--- a/SapiensDataAPI/Models/EncryptionTest.cs
+++ /dev/null
@@ -1,15 +0,0 @@
-using SoftFluent.ComponentModel.DataAnnotations;
-
-namespace SapiensDataAPI.Models
-{
-	public class EncryptionTest
-	{
-
-		public int Id { get; set; }
-
-		public required string Street { get; set; }
-
-		[Encrypted]
-		public required byte[] StreetEncrypted { get; set; }
-	}
-}