diff --git a/sub_scripts/testing_process.sh b/sub_scripts/testing_process.sh
index 01ade8c..a36c3c9 100644
--- a/sub_scripts/testing_process.sh
+++ b/sub_scripts/testing_process.sh
@@ -357,6 +357,11 @@ CHECK_URL () {
 			fi
 		done
 
+		# Detect the issue alias_traversal, https://github.com/yandex/gixy/blob/master/docs/en/plugins/aliastraversal.md
+		curl --location --insecure --silent $check_domain$check_path../html/index.nginx-debian.html \
+			| grep "title" | grep --quiet "Welcome to nginx on Debian" \
+			&& ECHO_FORMAT "Issue alias_traversal detected ! Please see here [...] to fix that.\n" "red" "bold"
+
 		# Remove the entries in /etc/hosts for the test domain
 		sudo sed --in-place '/#package_check/d' /etc/hosts
 	else