diff --git a/core-java-modules/core-java/src/main/java/com/baeldung/deserialization/vulnerabilities/BadThing.java b/core-java-modules/core-java-io-4/src/main/java/com/baeldung/deserialization/vulnerabilities/BadThing.java
similarity index 100%
rename from core-java-modules/core-java/src/main/java/com/baeldung/deserialization/vulnerabilities/BadThing.java
rename to core-java-modules/core-java-io-4/src/main/java/com/baeldung/deserialization/vulnerabilities/BadThing.java
diff --git a/core-java-modules/core-java/src/main/java/com/baeldung/deserialization/vulnerabilities/MyCustomAttackObject.java b/core-java-modules/core-java-io-4/src/main/java/com/baeldung/deserialization/vulnerabilities/MyCustomAttackObject.java
similarity index 100%
rename from core-java-modules/core-java/src/main/java/com/baeldung/deserialization/vulnerabilities/MyCustomAttackObject.java
rename to core-java-modules/core-java-io-4/src/main/java/com/baeldung/deserialization/vulnerabilities/MyCustomAttackObject.java
diff --git a/core-java-modules/core-java/src/test/java/com/baeldung/deserialization/vulnerabilities/BadThingUnitTest.java b/core-java-modules/core-java-io-4/src/test/java/com/baeldung/deserialization/vulnerabilities/BadThingUnitTest.java
similarity index 92%
rename from core-java-modules/core-java/src/test/java/com/baeldung/deserialization/vulnerabilities/BadThingUnitTest.java
rename to core-java-modules/core-java-io-4/src/test/java/com/baeldung/deserialization/vulnerabilities/BadThingUnitTest.java
index 5db51ba132..ea2180d178 100644
--- a/core-java-modules/core-java/src/test/java/com/baeldung/deserialization/vulnerabilities/BadThingUnitTest.java
+++ b/core-java-modules/core-java-io-4/src/test/java/com/baeldung/deserialization/vulnerabilities/BadThingUnitTest.java
@@ -13,7 +13,7 @@ public class BadThingUnitTest {
 
     @Test
     @DisplayName("When a BadThing object is deserialized, then code execution in MyCustomAttackObject is run.")
-    public void testCodeExecution() throws Exception {
+    public void givenABadThingObject_whenItsDeserialized_thenExecutionIsRun() throws Exception {
         BadThing bt = new BadThing();
 
         bt.looselyDefinedThing = new MyCustomAttackObject();