diff --git a/apps/browser/src/background/main.background.ts b/apps/browser/src/background/main.background.ts
index 5ad7cf80f31..587506a10d0 100644
--- a/apps/browser/src/background/main.background.ts
+++ b/apps/browser/src/background/main.background.ts
@@ -452,6 +452,8 @@ export default class MainBackground {
     this.keyGenerationService = new KeyGenerationService(this.cryptoFunctionService);
     this.storageService = new BrowserLocalStorageService(this.logService);
 
+    PhishingDetectionService.Initialize(this.logService);
+
     this.intraprocessMessagingSubject = new Subject<Message<Record<string, unknown>>>();
 
     this.messagingService = MessageSender.combine(
diff --git a/apps/browser/src/manifest.v3.json b/apps/browser/src/manifest.v3.json
index 1e2ac1812ca..af4f271427e 100644
--- a/apps/browser/src/manifest.v3.json
+++ b/apps/browser/src/manifest.v3.json
@@ -30,6 +30,12 @@
       "matches": ["*://*/*", "file:///*"],
       "exclude_matches": ["*://*/*.xml*", "file:///*.xml*"],
       "run_at": "document_start"
+    },
+    {
+      "js": ["content/trigger-phishing-detection-script-injection.js"],
+      "matches": ["*://*/*", "file:///*"],
+      "exclude_matches": ["*://*/*.xml*", "file:///*.xml*"],
+      "run_at": "document_start"
     }
   ],
   "background": {
diff --git a/apps/browser/src/phishing-detection/content/phishing-detection-browser.service.ts b/apps/browser/src/phishing-detection/content/phishing-detection-browser.service.ts
new file mode 100644
index 00000000000..714f3e3f9b2
--- /dev/null
+++ b/apps/browser/src/phishing-detection/content/phishing-detection-browser.service.ts
@@ -0,0 +1,46 @@
+export class PhishingDetectionBrowserService {
+  static notifyUser(url: string) {
+    const phishingDivId = "phishing-notification-bar";
+    const message = `${url} is a known phishing site`;
+
+    const wrapper = document.createElement("div");
+    wrapper.id = phishingDivId;
+    wrapper.classList.add("inner-wrapper");
+
+    wrapper.style.position = "fixed";
+    wrapper.style.top = "20px";
+    wrapper.style.right = "20px";
+    wrapper.style.zIndex = "10000";
+    wrapper.style.backgroundColor = "#fff";
+    wrapper.style.padding = "15px";
+    wrapper.style.border = "1px solid #ccc";
+    wrapper.style.borderRadius = "5px";
+    wrapper.style.boxShadow = "0 2px 10px rgba(0,0,0,0.2)";
+
+    const messageElement = document.createElement("div");
+    messageElement.id = "change-text";
+    messageElement.classList.add("notification-body");
+    messageElement.textContent = message;
+
+    const exitButton = document.createElement("button");
+    exitButton.type = "button";
+    exitButton.id = "change-exit";
+    exitButton.classList.add("primary");
+    exitButton.textContent = "Exit the page";
+
+    wrapper.appendChild(messageElement);
+    wrapper.appendChild(exitButton);
+
+    document.body.appendChild(wrapper);
+
+    setTimeout(() => {
+      if (document.body.contains(wrapper)) {
+        document.body.removeChild(wrapper);
+      }
+    }, 10000);
+  }
+
+  static getActiveUrl() {
+    return window?.location?.href;
+  }
+}
diff --git a/apps/browser/src/phishing-detection/phishing-detection.enum.ts b/apps/browser/src/phishing-detection/phishing-detection.enum.ts
new file mode 100644
index 00000000000..0bea27af8b9
--- /dev/null
+++ b/apps/browser/src/phishing-detection/phishing-detection.enum.ts
@@ -0,0 +1,3 @@
+export enum PhishingDetectionCommands {
+  CheckUrl = "CheckUrl",
+}
diff --git a/apps/browser/src/phishing-detection/trigger-phishing-detection-script-injection.ts b/apps/browser/src/phishing-detection/trigger-phishing-detection-script-injection.ts
new file mode 100644
index 00000000000..319c7e50be8
--- /dev/null
+++ b/apps/browser/src/phishing-detection/trigger-phishing-detection-script-injection.ts
@@ -0,0 +1,31 @@
+import { Utils } from "@bitwarden/common/platform/misc/utils";
+import { ConsoleLogService } from "@bitwarden/common/platform/services/console-log.service";
+
+import { PhishingDetectionBrowserService } from "./content/phishing-detection-browser.service";
+import { PhishingDetectionCommands } from "./phishing-detection.enum";
+
+const isDev = process.env.ENV === "development";
+const logService = new ConsoleLogService(isDev);
+
+if (document.readyState === "loading") {
+  document.addEventListener("DOMContentLoaded", loadPhishingDetectionContent);
+} else {
+  void loadPhishingDetectionContent();
+}
+
+async function loadPhishingDetectionContent() {
+  const activeUrl = PhishingDetectionBrowserService.getActiveUrl();
+
+  const { isPhishingDomain } = await chrome.runtime.sendMessage({
+    command: PhishingDetectionCommands.CheckUrl,
+    activeUrl,
+  });
+
+  if (isPhishingDomain) {
+    const domain = Utils.getDomain(activeUrl);
+
+    PhishingDetectionBrowserService.notifyUser(domain);
+  }
+}
+
+logService.info("Phishing Detection Service loaded.");
diff --git a/apps/browser/src/platform/services/phishing-detection.service.ts b/apps/browser/src/platform/services/phishing-detection.service.ts
index 8ef3ef311a5..5a1139d7640 100644
--- a/apps/browser/src/platform/services/phishing-detection.service.ts
+++ b/apps/browser/src/platform/services/phishing-detection.service.ts
@@ -1,3 +1,4 @@
+import { LogService } from "@bitwarden/common/platform/abstractions/log.service";
 import { Subscription } from "rxjs";
 
 import { PhishingApiServiceAbstraction } from "@bitwarden/common/abstractions/phishing-api.service.abstraction";
@@ -7,10 +8,20 @@ import { Utils } from "@bitwarden/common/platform/misc/utils";
 import { ScheduledTaskNames } from "@bitwarden/common/platform/scheduling";
 import { TaskSchedulerService } from "@bitwarden/common/platform/scheduling/task-scheduler.service";
 
+import { PhishingDetectionCommands } from "../../phishing-detection/phishing-detection.enum";
 import { BrowserApi } from "../browser/browser-api";
 
 export class PhishingDetectionService {
   private static knownPhishingDomains = new Set<string>();
+  static logService: LogService;
+
+  static Initialize(logService: LogService) {
+    PhishingDetectionService.logService = logService;
+    PhishingDetectionService.setupCheckUrlListener();
+
+    // Initializing the data for local development
+    PhishingDetectionService.loadMockedData();
+  }
   private static lastUpdateTime: number = 0;
   private static readonly UPDATE_INTERVAL = 24 * 60 * 60 * 1000; // 24 hours in milliseconds
   private static readonly RETRY_INTERVAL = 5 * 60 * 1000; // 5 minutes
@@ -229,9 +240,8 @@ export class PhishingDetectionService {
         const activeUrl = await PhishingDetectionService.getActiveUrl();
         const isPhishingDomain = PhishingDetectionService.checkUrl(activeUrl);
 
-        if (isPhishingDomain) {
-          PhishingDetectionService.notifyUser(activeUrl);
-        }
+        PhishingDetectionService.logService.debug("CheckUrl handler", { result, message });
+        sendResponse(result);
       }
     });
   }
diff --git a/apps/browser/webpack.config.js b/apps/browser/webpack.config.js
index ff5331ae459..77fab0090aa 100644
--- a/apps/browser/webpack.config.js
+++ b/apps/browser/webpack.config.js
@@ -199,6 +199,8 @@ const mainConfig = {
       "./src/autofill/content/bootstrap-autofill-overlay-notifications.ts",
     "content/bootstrap-legacy-autofill-overlay":
       "./src/autofill/deprecated/content/bootstrap-legacy-autofill-overlay.ts",
+    "content/trigger-phishing-detection-script-injection":
+      "./src/phishing-detection/trigger-phishing-detection-script-injection.ts",
     "content/autofiller": "./src/autofill/content/autofiller.ts",
     "content/auto-submit-login": "./src/autofill/content/auto-submit-login.ts",
     "content/notificationBar": "./src/autofill/content/notification-bar.ts",