diff --git a/packages/loopover-miner/lib/submission-freshness-check.js b/packages/loopover-miner/lib/submission-freshness-check.js
index 49cdb0c9dc..b80bd76c13 100644
--- a/packages/loopover-miner/lib/submission-freshness-check.js
+++ b/packages/loopover-miner/lib/submission-freshness-check.js
@@ -102,7 +102,8 @@ export async function checkSubmissionFreshness(candidate, deps, options = {}) {
     // referencing PR as "another author" whenever the casing happens to differ -- compare case-normalized.
     const minerLoginKey = minerLogin.toLowerCase();
     const referencingPrs = Array.isArray(snapshot.referencingPrs) ? snapshot.referencingPrs : [];
-    const addressedByAnotherAuthor = referencingPrs.some((pr) => typeof pr.authorLogin === "string" && pr.authorLogin.trim().toLowerCase() !== minerLoginKey && (pr.state === "merged" || pr.state === "open"));
+    const addressedByAnotherAuthor = referencingPrs.some((pr) => (pr.state === "merged" || pr.state === "open") &&
+        (typeof pr.authorLogin !== "string" || pr.authorLogin.trim().toLowerCase() !== minerLoginKey));
     if (addressedByAnotherAuthor) {
         return abort(eventLedger, repoFullName, candidate.issueNumber, "already_addressed");
     }
@@ -116,4 +117,4 @@ function abort(eventLedger, repoFullName, issueNumber, reason) {
     });
     return { fresh: false, reason };
 }
-//# 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
\ No newline at end of file
+//# 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
\ No newline at end of file
diff --git a/packages/loopover-miner/lib/submission-freshness-check.ts b/packages/loopover-miner/lib/submission-freshness-check.ts
index 40f7dd49b8..78d19be5fb 100644
--- a/packages/loopover-miner/lib/submission-freshness-check.ts
+++ b/packages/loopover-miner/lib/submission-freshness-check.ts
@@ -143,7 +143,9 @@ export async function checkSubmissionFreshness(
   const minerLoginKey = minerLogin.toLowerCase();
   const referencingPrs = Array.isArray(snapshot.referencingPrs) ? snapshot.referencingPrs : [];
   const addressedByAnotherAuthor = referencingPrs.some(
-    (pr) => typeof pr.authorLogin === "string" && pr.authorLogin.trim().toLowerCase() !== minerLoginKey && (pr.state === "merged" || pr.state === "open"),
+    (pr) =>
+      (pr.state === "merged" || pr.state === "open") &&
+      (typeof pr.authorLogin !== "string" || pr.authorLogin.trim().toLowerCase() !== minerLoginKey),
   );
   if (addressedByAnotherAuthor) {
     return abort(eventLedger, repoFullName, candidate.issueNumber, "already_addressed");
diff --git a/test/unit/miner-submission-freshness-check.test.ts b/test/unit/miner-submission-freshness-check.test.ts
index ffc031dbaa..3be64ef31d 100644
--- a/test/unit/miner-submission-freshness-check.test.ts
+++ b/test/unit/miner-submission-freshness-check.test.ts
@@ -162,7 +162,23 @@ describe("checkSubmissionFreshness (#3007)", () => {
     expect(result).toEqual({ fresh: false, reason: "already_addressed" });
   });
 
-  it("a referencing PR with a non-string authorLogin is ignored rather than crashing or false-flagging", async () => {
+  it("REGRESSION: a merged referencing PR with a missing authorLogin counts as already-addressed (fail-closed)", async () => {
+    const { claimLedger } = stubClaimLedger([activeClaim]);
+    const { eventLedger } = stubEventLedger();
+    const fetchLiveIssueSnapshot = vi.fn(async () => ({
+      state: "open" as const,
+      referencingPrs: [{ number: 99, state: "merged" as const, authorLogin: null as unknown as string, createdAt: null }],
+    }));
+
+    const result = await checkSubmissionFreshness(
+      { repoFullName: "acme/widgets", issueNumber: 42, minerLogin: "miner-bot" },
+      { claimLedger, fetchLiveIssueSnapshot, eventLedger },
+    );
+
+    expect(result).toEqual({ fresh: false, reason: "already_addressed" });
+  });
+
+  it("a referencing PR with a non-string authorLogin counts as already-addressed instead of being ignored", async () => {
     const { claimLedger } = stubClaimLedger([activeClaim]);
     const { eventLedger } = stubEventLedger();
     const fetchLiveIssueSnapshot = vi.fn(async () => ({
@@ -175,7 +191,7 @@ describe("checkSubmissionFreshness (#3007)", () => {
       { claimLedger, fetchLiveIssueSnapshot, eventLedger },
     );
 
-    expect(result).toEqual({ fresh: true });
+    expect(result).toEqual({ fresh: false, reason: "already_addressed" });
   });
 
   it("a CLOSED (not merged) referencing PR from another author does not count as already-addressed", async () => {