diff --git a/UnitTestsNet40/SecurityVulnerabilitiesTest.cs b/UnitTestsNet40/SecurityVulnerabilitiesTest.cs
index 04132b97..870531b8 100644
--- a/UnitTestsNet40/SecurityVulnerabilitiesTest.cs
+++ b/UnitTestsNet40/SecurityVulnerabilitiesTest.cs
@@ -16,6 +16,8 @@ namespace UnitTests
     [TestFixture]
     public class SecurityVulnerabilitiesTest
     {
+        private static readonly byte[] aes128Key = new byte[] { 194, 164, 235, 6, 138, 248, 171, 239, 24, 216, 11, 22, 137, 199, 215, 133 };
+         
         [Test]
         public void UnboundedPBKDF2Attack()
         {
@@ -155,6 +157,26 @@ public void DeflateBomb()
             {
                 Console.Out.WriteLine(e.ToString());
             }
+        }
+
+        [Test]
+        public void TruncatedGcmAuthTag()
+        {
+            // given 
+            string token = "eyJhbGciOiJkaXIiLCJlbmMiOiJBMTI4R0NNIn0..PEXf1goWOF0SZRe_.Zp3CHYq4ZqM3_opMIy25O50gmQzw_p-nCOiW2ROuQSv80-aD-78n8m103kgPRPCsOt7qrckDRGSDACOBZGr2WovzSC-dxIcW3EsPqtibueyh0p3FY43h-bcbhPzXBdjQPaNTCY0o26wcEV_4FzPYdE9_ngRFIUe_7Kby-E2CWYLFc5D9RO9TLGN5dpHL6l4SOGbNz8M0o4aQuyJv3BV1wj_KswqyVcKBHjm0eh6RmFhoERxWjvt5yeo83bzxTfReVWAxXw.AVLr7JE1r1uiUSLj";
+
+            try
+            {
+                // when decrypt token with trunated AES GCM tag, it should fail
+                Jose.JWT.Decode(token, aes128Key);
+                Assert.Fail("Should fail with IntegrityException");
+
+            }
+            catch (ArgumentException e)
+            {
+                Console.Out.WriteLine(e.ToString());
+            }
         }
+
     }
 }
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