diff --git a/src/NuGet.Core/NuGet.Protocol/Plugins/PluginDiscoverer.cs b/src/NuGet.Core/NuGet.Protocol/Plugins/PluginDiscoverer.cs
index cc7ce269a60..9f45ce792a4 100644
--- a/src/NuGet.Core/NuGet.Protocol/Plugins/PluginDiscoverer.cs
+++ b/src/NuGet.Core/NuGet.Protocol/Plugins/PluginDiscoverer.cs
@@ -192,14 +192,11 @@ internal List<PluginFile> GetPluginsInNuGetPluginPaths()
                     if (File.Exists(path))
                     {
                         FileInfo fileInfo = new FileInfo(path);
-                        if (fileInfo.Name.StartsWith("nuget-plugin-", StringComparison.CurrentCultureIgnoreCase))
+                        if (IsValidPluginFile(fileInfo))
                         {
                             // A DotNet tool plugin
-                            if (IsValidPluginFile(fileInfo))
-                            {
-                                PluginFile pluginFile = new PluginFile(fileInfo.FullName, new Lazy<PluginFileState>(() => PluginFileState.Valid), requiresDotnetHost: false);
-                                pluginFiles.Add(pluginFile);
-                            }
+                            PluginFile pluginFile = new PluginFile(fileInfo.FullName, new Lazy<PluginFileState>(() => PluginFileState.Valid), requiresDotnetHost: false);
+                            pluginFiles.Add(pluginFile);
                         }
                         else
                         {
@@ -274,6 +271,11 @@ private static List<PluginFile> GetNetToolsPluginsInDirectory(string directoryPa
         /// <returns></returns>
         internal static bool IsValidPluginFile(FileInfo fileInfo)
         {
+            if (!fileInfo.Name.StartsWith("nuget-plugin-", StringComparison.Ordinal))
+            {
+                return false;
+            }
+
             if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
             {
                 return fileInfo.Extension.Equals(".exe", StringComparison.OrdinalIgnoreCase) ||
diff --git a/test/NuGet.Core.Tests/NuGet.Protocol.Tests/Plugins/PluginDiscovererTests.cs b/test/NuGet.Core.Tests/NuGet.Protocol.Tests/Plugins/PluginDiscovererTests.cs
index c2e792f67d9..bbcd4b3a76f 100644
--- a/test/NuGet.Core.Tests/NuGet.Protocol.Tests/Plugins/PluginDiscovererTests.cs
+++ b/test/NuGet.Core.Tests/NuGet.Protocol.Tests/Plugins/PluginDiscovererTests.cs
@@ -519,13 +519,34 @@ public void GetPluginsInNuGetPluginPaths_NoEnvironmentVariables_ReturnsNoPlugins
             Assert.Empty(plugins);
         }
 
+        [PlatformTheory(Platform.Windows)]
+        [InlineData("nuget-plugin-auth.exe", true)]
+        [InlineData("nuget-plugin-AUTH.bat", true)]
+        [InlineData("nuGet-plugin-auth.exe", false)]
+        [InlineData("NUGet-PLUGIN-auth.bat", false)]
+        public void IsValidPlugin_IsCaseSensitive(string file, bool isValid)
+        {
+            // Arrange
+            using TestDirectory testDirectory = TestDirectory.Create();
+            var workingPath = testDirectory.Path;
+            var pluginFilePath = Path.Combine(workingPath, file);
+            File.Create(pluginFilePath);
+            var fileInfo = new FileInfo(pluginFilePath);
+
+            // Act
+            bool result = PluginDiscoverer.IsValidPluginFile(fileInfo);
+
+            // Assert
+            Assert.Equal(isValid, result);
+        }
+
         [PlatformFact(Platform.Windows)]
         public void IsValidPluginFile_ExeFile_ReturnsTrue()
         {
             // Arrange
             using TestDirectory testDirectory = TestDirectory.Create();
             var workingPath = testDirectory.Path;
-            var pluginFilePath = Path.Combine(workingPath, "plugin.exe");
+            var pluginFilePath = Path.Combine(workingPath, "nuget-plugin-.exe");
             File.Create(pluginFilePath);
             var fileInfo = new FileInfo(pluginFilePath);
 
@@ -542,7 +563,7 @@ public void IsValidPluginFile_Windows_NonExecutableFile_ReturnsFalse()
             // Arrange
             using TestDirectory testDirectory = TestDirectory.Create();
             var workingPath = testDirectory.Path;
-            var nonPluginFilePath = Path.Combine(workingPath, "plugin.txt");
+            var nonPluginFilePath = Path.Combine(workingPath, "nuget-plugin-.txt");
             File.Create(nonPluginFilePath);
             var fileInfo = new FileInfo(nonPluginFilePath);
 
@@ -559,7 +580,7 @@ public void IsValidPluginFile_Unix_ExecutableFile_ReturnsTrue()
             // Arrange
             using TestDirectory testDirectory = TestDirectory.Create();
             var workingPath = testDirectory.Path;
-            var pluginFilePath = Path.Combine(workingPath, "plugin");
+            var pluginFilePath = Path.Combine(workingPath, "nuget-plugin-");
             File.Create(pluginFilePath).Dispose();
 
 #if NET8_0_OR_GREATER
@@ -585,7 +606,7 @@ public void IsExecutable_FileIsExecutable_ReturnsTrue()
             // Arrange
             using TestDirectory testDirectory = TestDirectory.Create();
             var workingPath = testDirectory.Path;
-            var pluginFilePath = Path.Combine(workingPath, "plugin");
+            var pluginFilePath = Path.Combine(workingPath, "nuget-plugin-");
             File.Create(pluginFilePath);
 
             // Set execute permissions
@@ -606,7 +627,7 @@ public void IsExecutable_FileIsNotExecutable_ReturnsFalse()
             // Arrange
             using TestDirectory testDirectory = TestDirectory.Create();
             var workingPath = testDirectory.Path;
-            var pluginFilePath = Path.Combine(workingPath, "plugin");
+            var pluginFilePath = Path.Combine(workingPath, "nuget-plugin-");
             File.Create(pluginFilePath);
 
             // Remove execute permissions
@@ -627,7 +648,7 @@ public void IsExecutable_FileWithSpace_ReturnsTrue()
             // Arrange
             using TestDirectory testDirectory = TestDirectory.Create();
             var workingPath = testDirectory.Path;
-            var pluginFilePath = Path.Combine(workingPath, "plugin with space");
+            var pluginFilePath = Path.Combine(workingPath, "nuget-plugin- with space");
             File.Create(pluginFilePath).Dispose();
 
             // Set execute permissions