diff --git a/.github/aicodingflow-tests/test_apply_issue_triage_result.py b/.github/aicodingflow-tests/test_apply_issue_triage_result.py
index a83a355..37db8a7 100644
--- a/.github/aicodingflow-tests/test_apply_issue_triage_result.py
+++ b/.github/aicodingflow-tests/test_apply_issue_triage_result.py
@@ -102,6 +102,29 @@ def test_upsert_triage_comment_patches_existing_marker_comment(self) -> None:
             check=True,
         )
 
+    def test_find_triage_comment_skips_unowned_and_quoted_markers(self) -> None:
+        marker = apply_triage.MARKER
+        comments = [
+            {"id": 1, "user": {"login": "reporter"}, "body": f"{marker}\nCopied triage"},
+            {"id": 2, "user": {"login": "other[bot]"}, "body": f"{marker}\nOther bot"},
+            {"id": 3, "user": {"login": "github-actions[bot]"}, "body": f"Quote: {marker}"},
+            {"id": 4, "user": {"login": "github-actions[bot]"}, "body": f"{marker}\nActual triage"},
+        ]
+        with mock.patch.object(apply_triage, "run_gh_json", return_value=[comments]):
+            self.assertEqual(apply_triage.find_triage_comment("owner/repo", 19), comments[3])
+
+    def test_upsert_triage_comment_creates_when_only_user_comment_has_marker(self) -> None:
+        comment = {"id": 123, "user": {"login": "reporter"}, "body": apply_triage.MARKER}
+        with (
+            mock.patch.object(apply_triage, "run_gh_json", return_value=[[comment]]),
+            mock.patch.object(apply_triage.subprocess, "run") as run,
+        ):
+            apply_triage.upsert_triage_comment("owner/repo", 19, "body")
+
+        run.assert_called_once_with(
+            ["gh", "api", "repos/owner/repo/issues/19/comments", "-f", "body=body"], check=True,
+        )
+
 
 if __name__ == "__main__":
     unittest.main()
diff --git a/.github/aicodingflow-tests/test_nightly_existing_code_review.py b/.github/aicodingflow-tests/test_nightly_existing_code_review.py
index a8a6165..4e4bc30 100644
--- a/.github/aicodingflow-tests/test_nightly_existing_code_review.py
+++ b/.github/aicodingflow-tests/test_nightly_existing_code_review.py
@@ -258,9 +258,16 @@ def test_user_created_duplicate_never_triggers_nightly_triage_dispatch(self) ->
             dispatch.assert_not_called()
 
     def test_triage_comment_lookup_and_dispatch_command(self) -> None:
-        with mock.patch.object(publish, "run_gh_json", return_value=[[{"body": publish.TRIAGE_COMMENT_MARKER}]]) as fetch:
+        marker = "<!-- aicodingflow:triage-issue -->"
+        comments = [
+            {"user": {"login": "reporter"}, "body": marker},
+            {"user": {"login": "github-actions[bot]"}, "body": marker},
+        ]
+        with mock.patch.object(publish, "run_gh_json", return_value=[comments]) as fetch:
             self.assertTrue(publish.has_triage_comment("owner/repo", 7))
             fetch.assert_called_once()
+        with mock.patch.object(publish, "run_gh_json", return_value=[comments[:1]]):
+            self.assertFalse(publish.has_triage_comment("owner/repo", 7))
         with mock.patch.object(publish.subprocess, "run") as run:
             publish.dispatch_triage("owner/repo", "main", 7)
             run.assert_called_once_with([
diff --git a/.github/scripts/apply_issue_triage_result.py b/.github/scripts/apply_issue_triage_result.py
index 35d5369..1aff4b7 100644
--- a/.github/scripts/apply_issue_triage_result.py
+++ b/.github/scripts/apply_issue_triage_result.py
@@ -14,6 +14,7 @@
 
 
 MARKER = "<!-- aicodingflow:triage-issue -->"
+TRIAGE_COMMENT_AUTHOR = "github-actions[bot]"
 PROTECTED_LABELS = {"plan-approved", "ready-to-implement", "ready-to-spec"}
 
 
@@ -55,6 +56,12 @@ def sync_labels(
         )
 
 
+def is_triage_comment(comment: dict[str, Any]) -> bool:
+    user = comment.get("user") or {}
+    body = comment.get("body") or ""
+    return user.get("login") == TRIAGE_COMMENT_AUTHOR and isinstance(body, str) and body.startswith(MARKER)
+
+
 def find_triage_comment(repo: str, issue_number: int) -> dict[str, Any] | None:
     pages = run_gh_json(
         [
@@ -65,7 +72,7 @@ def find_triage_comment(repo: str, issue_number: int) -> dict[str, Any] | None:
         ]
     )
     for comment in flatten_pages(pages):
-        if MARKER in (comment.get("body") or ""):
+        if is_triage_comment(comment):
             return comment
     return None
 
diff --git a/.github/scripts/publish_nightly_findings.py b/.github/scripts/publish_nightly_findings.py
index ed22046..3192bec 100644
--- a/.github/scripts/publish_nightly_findings.py
+++ b/.github/scripts/publish_nightly_findings.py
@@ -13,7 +13,7 @@
 from pathlib import Path
 from typing import Any
 
-from apply_issue_triage_result import MARKER as TRIAGE_COMMENT_MARKER
+from apply_issue_triage_result import is_triage_comment
 from github_api import flatten_gh_pages, run_gh_json
 from prepare_nightly_review import focus_files, issue_snapshot, parse_cycle_days
 
@@ -181,7 +181,7 @@ def has_triage_comment(repo: str, issue_number: int) -> bool:
         "api", f"repos/{repo}/issues/{issue_number}/comments?per_page=100",
         "--paginate", "--slurp",
     ])
-    return any(TRIAGE_COMMENT_MARKER in str(item.get("body") or "") for item in flatten_gh_pages(pages))
+    return any(is_triage_comment(item) for item in flatten_gh_pages(pages))
 
 
 def dispatch_triage(repo: str, default_branch: str, issue_number: int) -> None: