Fixed python 3.9 type issue in transformation

AttackIQ · Oct 25, 2024 · 7a713e2 · 7a713e2
1 parent e3e0bae
commit 7a713e2
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/sigma/pipelines/secops/transformations.py b/sigma/pipelines/secops/transformations.py
@@ -109,7 +109,7 @@ def apply(
         self._pipeline: "sigma.processing.pipeline.ProcessingPipeline" = pipeline  # noqa: F821 # type: ignore
         if rule.custom_attributes.get("event_types", None):
             self.processing_item_applied(rule)
-            if isinstance(rule.custom_attributes["event_types"], Union[str, list]):
+            if isinstance(rule.custom_attributes["event_types"], list) or isinstance(rule.custom_attributes["event_types"], str):
                 rule.custom_attributes["event_types"] = set([rule.custom_attributes["event_types"]])
         else:
             rule.custom_attributes["event_types"] = set()