diff --git a/apps/browser/src/autofill/background/overlay.background.spec.ts b/apps/browser/src/autofill/background/overlay.background.spec.ts
index 2ca0920a38..b2ad7128b6 100644
--- a/apps/browser/src/autofill/background/overlay.background.spec.ts
+++ b/apps/browser/src/autofill/background/overlay.background.spec.ts
@@ -1299,7 +1299,11 @@ describe("OverlayBackground", () => {
 
       beforeEach(() => {
         jest.useFakeTimers();
-        sender = mock<chrome.runtime.MessageSender>({ tab: { id: 1 } });
+        sender = mock<chrome.runtime.MessageSender>({
+          tab: { id: 1 },
+          url: "https://top-frame-test.com",
+          frameId: 0,
+        });
         openAddEditVaultItemPopoutSpy = jest
           .spyOn(overlayBackground as any, "openAddEditVaultItemPopout")
           .mockImplementation();
@@ -1482,10 +1486,15 @@ describe("OverlayBackground", () => {
 
       describe("pulling cipher data from multiple frames of a tab", () => {
         let subFrameSender: MockProxy<chrome.runtime.MessageSender>;
+        let secondSubFrameSender: MockProxy<chrome.runtime.MessageSender>;
         const command = "autofillOverlayAddNewVaultItem";
 
         beforeEach(() => {
           subFrameSender = mock<chrome.runtime.MessageSender>({ tab: sender.tab, frameId: 2 });
+          secondSubFrameSender = mock<chrome.runtime.MessageSender>({
+            tab: sender.tab,
+            frameId: 3,
+          });
         });
 
         it("combines the login cipher data from all frames", async () => {
@@ -1494,9 +1503,15 @@ describe("OverlayBackground", () => {
             "buildLoginCipherView",
           );
           const addNewCipherType = CipherType.Login;
+          const topLevelLoginCipherData = {
+            uri: "https://top-frame-test.com",
+            hostname: "top-frame-test.com",
+            username: "",
+            password: "",
+          };
           const loginCipherData = {
             uri: "https://tacos.com",
-            hostname: "",
+            hostname: "tacos.com",
             username: "username",
             password: "",
           };
@@ -1507,11 +1522,56 @@ describe("OverlayBackground", () => {
             password: "password",
           };
 
-          sendMockExtensionMessage({ command, addNewCipherType, login: loginCipherData }, sender);
+          sendMockExtensionMessage(
+            { command, addNewCipherType, login: topLevelLoginCipherData },
+            sender,
+          );
+          sendMockExtensionMessage(
+            { command, addNewCipherType, login: loginCipherData },
+            subFrameSender,
+          );
           sendMockExtensionMessage(
             { command, addNewCipherType, login: subFrameLoginCipherData },
+            secondSubFrameSender,
+          );
+          jest.advanceTimersByTime(100);
+          await flushPromises();
+
+          expect(buildLoginCipherViewSpy).toHaveBeenCalledWith({
+            uri: "https://top-frame-test.com",
+            hostname: "top-frame-test.com",
+            username: "username",
+            password: "password",
+          });
+        });
+
+        it("sets the uri to the subframe of a tab if the login data is complete", async () => {
+          const buildLoginCipherViewSpy = jest.spyOn(
+            overlayBackground as any,
+            "buildLoginCipherView",
+          );
+          const addNewCipherType = CipherType.Login;
+          const loginCipherData = {
+            uri: "https://tacos.com",
+            hostname: "tacos.com",
+            username: "username",
+            password: "password",
+          };
+          const topLevelLoginCipherData = {
+            uri: "https://top-frame-test.com",
+            hostname: "top-frame-test.com",
+            username: "",
+            password: "",
+          };
+
+          sendMockExtensionMessage(
+            { command, addNewCipherType, login: loginCipherData },
             subFrameSender,
           );
+          sendMockExtensionMessage(
+            { command, addNewCipherType, login: topLevelLoginCipherData },
+            sender,
+          );
           jest.advanceTimersByTime(100);
           await flushPromises();
 
diff --git a/apps/browser/src/autofill/background/overlay.background.ts b/apps/browser/src/autofill/background/overlay.background.ts
index 2cef0b0e78..6e7db21a6d 100644
--- a/apps/browser/src/autofill/background/overlay.background.ts
+++ b/apps/browser/src/autofill/background/overlay.background.ts
@@ -1589,7 +1589,7 @@ export class OverlayBackground implements OverlayBackgroundInterface {
     }
 
     if (login && this.isAddingNewLogin()) {
-      this.updateCurrentAddNewItemLogin(login);
+      this.updateCurrentAddNewItemLogin(login, sender);
     }
 
     if (card && this.isAddingNewCard()) {
@@ -1629,22 +1629,56 @@ export class OverlayBackground implements OverlayBackgroundInterface {
    * login data is already present, the data will be merged with the existing data.
    *
    * @param login - The login data captured from the extension message
+   * @param sender - The sender of the extension message
    */
-  private updateCurrentAddNewItemLogin(login: NewLoginCipherData) {
+  private updateCurrentAddNewItemLogin(
+    login: NewLoginCipherData,
+    sender: chrome.runtime.MessageSender,
+  ) {
+    const { username, password } = login;
+
+    if (this.partialLoginDataFoundInSubFrame(sender, login)) {
+      login.uri = "";
+      login.hostname = "";
+    }
+
     if (!this.currentAddNewItemData.login) {
       this.currentAddNewItemData.login = login;
       return;
     }
 
     const currentLoginData = this.currentAddNewItemData.login;
+    if (sender.frameId === 0 && currentLoginData.hostname && !username && !password) {
+      login.uri = "";
+      login.hostname = "";
+    }
+
     this.currentAddNewItemData.login = {
       uri: login.uri || currentLoginData.uri,
       hostname: login.hostname || currentLoginData.hostname,
-      username: login.username || currentLoginData.username,
-      password: login.password || currentLoginData.password,
+      username: username || currentLoginData.username,
+      password: password || currentLoginData.password,
     };
   }
 
+  /**
+   * Handles verifying if the login data for a tab is separated between various
+   * iframe elements. If that is the case, we want to ignore the login uri and
+   * domain to ensure the top frame is treated as the primary source of login data.
+   *
+   * @param sender - The sender of the extension message
+   * @param login - The login data captured from the extension message
+   */
+  private partialLoginDataFoundInSubFrame(
+    sender: chrome.runtime.MessageSender,
+    login: NewLoginCipherData,
+  ) {
+    const { frameId } = sender;
+    const { username, password } = login;
+
+    return frameId !== 0 && (!username || !password);
+  }
+
   /**
    * Updates the current add new item data with the provided card data. If the
    * card data is already present, the data will be merged with the existing data.