diff --git a/security-modules/unrecoverablekeyexception/src/main/java/com/baeldung/unrecoverablekeyexception/KeyManagerInitializer.java b/core-java-modules/core-java-security-4/src/main/java/com/baeldung/unrecoverablekeyexception/KeyManagerInitializer.java
similarity index 100%
rename from security-modules/unrecoverablekeyexception/src/main/java/com/baeldung/unrecoverablekeyexception/KeyManagerInitializer.java
rename to core-java-modules/core-java-security-4/src/main/java/com/baeldung/unrecoverablekeyexception/KeyManagerInitializer.java
diff --git a/security-modules/unrecoverablekeyexception/src/main/resources/multi_entry_keystore.jks b/core-java-modules/core-java-security-4/src/main/resources/multi_entry_keystore.jks
similarity index 100%
rename from security-modules/unrecoverablekeyexception/src/main/resources/multi_entry_keystore.jks
rename to core-java-modules/core-java-security-4/src/main/resources/multi_entry_keystore.jks
diff --git a/security-modules/unrecoverablekeyexception/src/main/resources/single_entry_keystore.jks b/core-java-modules/core-java-security-4/src/main/resources/single_entry_keystore.jks
similarity index 100%
rename from security-modules/unrecoverablekeyexception/src/main/resources/single_entry_keystore.jks
rename to core-java-modules/core-java-security-4/src/main/resources/single_entry_keystore.jks
diff --git a/security-modules/unrecoverablekeyexception/src/test/java/com/baeldung/unrecoverablekeyexception/KeyManagerInitializerUnitTest.java b/core-java-modules/core-java-security-4/src/test/java/com/baeldung/unrecoverablekeyexception/KeyManagerInitializerUnitTest.java
similarity index 100%
rename from security-modules/unrecoverablekeyexception/src/test/java/com/baeldung/unrecoverablekeyexception/KeyManagerInitializerUnitTest.java
rename to core-java-modules/core-java-security-4/src/test/java/com/baeldung/unrecoverablekeyexception/KeyManagerInitializerUnitTest.java
diff --git a/security-modules/pom.xml b/security-modules/pom.xml
index 5702cfa98f..12c1714e6c 100644
--- a/security-modules/pom.xml
+++ b/security-modules/pom.xml
@@ -23,7 +23,6 @@
         <module>jwt</module>
         <module>oauth2-framework-impl</module>
         <module>sql-injection-samples</module>
-        <module>unrecoverablekeyexception</module>
     </modules>
 
 </project>
diff --git a/security-modules/unrecoverablekeyexception/.gitignore b/security-modules/unrecoverablekeyexception/.gitignore
deleted file mode 100644
index f83e8cf07c..0000000000
--- a/security-modules/unrecoverablekeyexception/.gitignore
+++ /dev/null
@@ -1,3 +0,0 @@
-.idea
-target
-*.iml
diff --git a/security-modules/unrecoverablekeyexception/pom.xml b/security-modules/unrecoverablekeyexception/pom.xml
deleted file mode 100644
index 47fcce0f5b..0000000000
--- a/security-modules/unrecoverablekeyexception/pom.xml
+++ /dev/null
@@ -1,19 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
-    <modelVersion>4.0.0</modelVersion>
-
-    <groupId>com.baeldung.unrecoverablekeyexception</groupId>
-    <artifactId>unrecoverablekeyexception</artifactId>
-
-    <name>unrecoverablekeyexception</name>
-
-    <parent>
-        <groupId>com.baeldung</groupId>
-        <artifactId>security-modules</artifactId>
-        <version>1.0.0-SNAPSHOT</version>
-        <relativePath>../pom.xml</relativePath>
-    </parent>
-
-</project>
\ No newline at end of file