diff --git a/cve-2021-4034-poc.c b/cve-2021-4034-poc.c
index b274108..3fb5202 100644
--- a/cve-2021-4034-poc.c
+++ b/cve-2021-4034-poc.c
@@ -1,3 +1,7 @@
+/*
+ * Proof of Concept for PwnKit: Local Privilege Escalation Vulnerability Discovered in polkit’s pkexec (CVE-2021-4034) by Andris Raugulis <moo@arthepsy.eu>
+ * Advisory: https://blog.qualys.com/vulnerabilities-threat-research/2022/01/25/pwnkit-local-privilege-escalation-vulnerability-discovered-in-polkits-pkexec-cve-2021-4034
+ */
 #include <stdio.h>
 #include <stdlib.h>
 #include <unistd.h>