diff --git a/src/main/java/org/opensearch/securityanalytics/rules/objects/SigmaRule.java b/src/main/java/org/opensearch/securityanalytics/rules/objects/SigmaRule.java
index 4b507a863..6236713d1 100644
--- a/src/main/java/org/opensearch/securityanalytics/rules/objects/SigmaRule.java
+++ b/src/main/java/org/opensearch/securityanalytics/rules/objects/SigmaRule.java
@@ -11,8 +11,11 @@
 import org.opensearch.securityanalytics.rules.exceptions.SigmaLevelError;
 import org.opensearch.securityanalytics.rules.exceptions.SigmaLogsourceError;
 import org.opensearch.securityanalytics.rules.exceptions.SigmaStatusError;
+import org.yaml.snakeyaml.DumperOptions;
+import org.yaml.snakeyaml.LoaderOptions;
 import org.yaml.snakeyaml.Yaml;
 import org.yaml.snakeyaml.constructor.SafeConstructor;
+import org.yaml.snakeyaml.representer.Representer;
 
 import java.text.SimpleDateFormat;
 import java.util.ArrayList;
@@ -168,7 +171,10 @@ protected static SigmaRule fromDict(Map<String, Object> rule, boolean collectErr
     }
 
     public static SigmaRule fromYaml(String rule, boolean collectErrors) throws SigmaError {
-        Yaml yaml = new Yaml(new SafeConstructor());
+        LoaderOptions loaderOptions = new LoaderOptions();
+        loaderOptions.setNestingDepthLimit(10);
+
+        Yaml yaml = new Yaml(new SafeConstructor(), new Representer(), new DumperOptions(), loaderOptions);
         Map<String, Object> ruleMap = yaml.load(rule);
         return fromDict(ruleMap, collectErrors);
     }
diff --git a/src/test/java/org/opensearch/securityanalytics/TestHelpers.java b/src/test/java/org/opensearch/securityanalytics/TestHelpers.java
index 939b118f5..34afda245 100644
--- a/src/test/java/org/opensearch/securityanalytics/TestHelpers.java
+++ b/src/test/java/org/opensearch/securityanalytics/TestHelpers.java
@@ -320,7 +320,7 @@ public static User randomUserEmpty() {
     }
 
     public static String randomDetectorType() {
-        return "TEST_WINDOWS";
+        return "test_windows";
     }
 
     public static DetectorInput randomDetectorInput() {
diff --git a/src/test/java/org/opensearch/securityanalytics/resthandler/DetectorRestApiIT.java b/src/test/java/org/opensearch/securityanalytics/resthandler/DetectorRestApiIT.java
index e20f69161..1711a6ca3 100644
--- a/src/test/java/org/opensearch/securityanalytics/resthandler/DetectorRestApiIT.java
+++ b/src/test/java/org/opensearch/securityanalytics/resthandler/DetectorRestApiIT.java
@@ -585,12 +585,12 @@ public void testDeletingADetector_single_ruleTopicIndex() throws IOException {
         Response deleteResponse = makeRequest(client(), "DELETE", SecurityAnalyticsPlugin.DETECTOR_BASE_URI + "/" + detectorId1, Collections.emptyMap(), null);
         Assert.assertEquals("Delete detector failed", RestStatus.OK, restStatus(deleteResponse));
         // We deleted 1 detector, but 1 detector with same type exists, so we expect queryIndex to be present
-        Assert.assertTrue(doesIndexExist(String.format(Locale.getDefault(), ".opensearch-sap-%s-detectors-queries-000001", "test_windows")));
+        Assert.assertTrue(doesIndexExist(String.format(Locale.ROOT, ".opensearch-sap-%s-detectors-queries-000001", "test_windows")));
 
         deleteResponse = makeRequest(client(), "DELETE", SecurityAnalyticsPlugin.DETECTOR_BASE_URI + "/" + detectorId2, Collections.emptyMap(), null);
         Assert.assertEquals("Delete detector failed", RestStatus.OK, restStatus(deleteResponse));
         // We deleted all detectors of type windows, so we expect that queryIndex is deleted
-        Assert.assertFalse(doesIndexExist(String.format(Locale.getDefault(), ".opensearch-sap-%s-detectors-queries-000001", "test_windows")));
+        Assert.assertFalse(doesIndexExist(String.format(Locale.ROOT, ".opensearch-sap-%s-detectors-queries-000001", "test_windows")));
 
         request = "{\n" +
                 "   \"query\" : {\n" +