diff --git a/core-java-modules/core-java-security-4/README.md b/core-java-modules/core-java-security-4/README.md
index edb29167ef..236715713b 100644
--- a/core-java-modules/core-java-security-4/README.md
+++ b/core-java-modules/core-java-security-4/README.md
@@ -4,4 +4,5 @@ This module contains articles about core Java Security
 
 ### Relevant Articles:
 - [Check if Certificate Is Self-Signed or CA-Signed With Java](https://www.baeldung.com/java-check-certificate-sign)
+- [Extract CN From X509 Certificate in Java](https://www.baeldung.com/java-extract-common-name-x509-certificate)
 - More articles: [[<-- prev]](/core-java-modules/core-java-security-3)