diff --git a/manifest.yaml b/manifest.yaml
index 0a1ea5e..42111aa 100644
--- a/manifest.yaml
+++ b/manifest.yaml
@@ -1349,9 +1349,11 @@ templates:
       path: templates/investigate-security.md
       description: >
         Security audit of code or a system component. Systematic
-        vulnerability analysis with severity classification.
+        vulnerability analysis with severity classification. Applies
+        exhaustive path tracing selectively to parser/decoder functions
+        that handle untrusted structured input.
       persona: security-auditor
-      protocols: [anti-hallucination, self-verification, operational-constraints, adversarial-falsification, security-vulnerability]
+      protocols: [anti-hallucination, self-verification, operational-constraints, adversarial-falsification, security-vulnerability, exhaustive-path-tracing]
       taxonomies: [stack-lifetime-hazards]
       format: investigation-report