diff --git a/app/browser/reducers/dappReducer.js b/app/browser/reducers/dappReducer.js
index daf88f1d937..ec381715036 100644
--- a/app/browser/reducers/dappReducer.js
+++ b/app/browser/reducers/dappReducer.js
@@ -15,13 +15,16 @@ const getSetting = require('../../../js/settings').getSetting
 const tabActions = require('../../common/actions/tabActions')
 const tabState = require('../../common/state/tabState')
 const config = require('../../../js/constants/config')
+const {getOrigin} = require('../../../js/state/siteUtil')
+
+let notificationCallbacks = []
 
 const dappReducer = (state, action, immutableAction) => {
   action = immutableAction || makeImmutable(action)
   switch (action.get('actionType')) {
     case appConstants.APP_DAPP_AVAILABLE:
-      if (!getSetting(settings.METAMASK_PROMPT_DISMISSED) && !getSetting(settings.METAMASK_ENABLED)) {
-        showDappNotification()
+      if (!getSetting(settings.METAMASK_ENABLED)) {
+        showDappNotification(action.get('location'))
       }
       break
   }
@@ -31,20 +34,8 @@ const dappReducer = (state, action, immutableAction) => {
 const notifications = {
   text: {
     greeting: locale.translation('updateHello'),
-    message: locale.translation('dappDetected'),
     enable: locale.translation('dappEnableExtension'),
     dismiss: locale.translation('dappDismiss')
-  },
-  onResponse: (message, buttonIndex) => {
-    // Index 0 is for dismiss
-    if (buttonIndex === 0) {
-      appActions.changeSetting(settings.METAMASK_PROMPT_DISMISSED, true)
-    }
-    // Index 1 is for enable
-    if (buttonIndex === 1) {
-      appActions.changeSetting(settings.METAMASK_ENABLED, true)
-    }
-    appActions.hideNotification(message)
   }
 }
 
@@ -54,28 +45,52 @@ process.on('extension-ready', (installInfo) => {
   }
 })
 
-const showDappNotification = () => {
+const showDappNotification = (location) => {
+  const origin = getOrigin(location)
+  if (!origin || getSetting(settings.METAMASK_PROMPT_DISMISSED)) {
+    return
+  }
+
+  const message = locale.translation('dappDetected').replace(/{{\s*origin\s*}}/, origin)
+
   appActions.showNotification({
     greeting: notifications.text.greeting,
-    message: notifications.text.message,
+    message: message,
     buttons: [
       {text: notifications.text.dismiss},
       {text: notifications.text.enable}
     ],
+    frameOrigin: origin,
     options: {
-      persist: false
+      persist: true
     }
   })
-}
 
-if (ipcMain) {
-  ipcMain.on(messages.NOTIFICATION_RESPONSE, (e, message, buttonIndex) => {
-    switch (message) {
-      case notifications.text.message:
-        notifications.onResponse(message, buttonIndex)
-        break
+  if (!notificationCallbacks[message]) {
+    notificationCallbacks[message] = (e, msg, buttonIndex, persist) => {
+      if (msg === message) {
+        appActions.hideNotification(message)
+        // Index 0 is for dismiss
+        if (buttonIndex === 0) {
+          if (persist) {
+            appActions.changeSetting(settings.METAMASK_PROMPT_DISMISSED, true)
+          }
+        }
+
+        // Index 1 is for enable
+        if (buttonIndex === 1) {
+          appActions.changeSetting(settings.METAMASK_ENABLED, true)
+        }
+
+        if (notificationCallbacks[message]) {
+          ipcMain.removeListener(messages.NOTIFICATION_RESPONSE, notificationCallbacks[message])
+          delete notificationCallbacks[message]
+        }
+      }
     }
-  })
+  }
+
+  ipcMain.on(messages.NOTIFICATION_RESPONSE, notificationCallbacks[message])
 }
 
 module.exports = dappReducer
diff --git a/app/extensions.js b/app/extensions.js
index 01423e42046..7bf9aafd83c 100644
--- a/app/extensions.js
+++ b/app/extensions.js
@@ -95,8 +95,7 @@ let generateBraveManifest = () => {
         js: [
           'content/scripts/adInsertion.js',
           'content/scripts/pageInformation.js',
-          'content/scripts/flashListener.js',
-          'content/scripts/dappListener.js'
+          'content/scripts/flashListener.js'
         ]
       },
       {
@@ -140,7 +139,8 @@ let generateBraveManifest = () => {
         run_at: 'document_start',
         all_frames: true,
         js: [
-          'content/scripts/dndHandler.js'
+          'content/scripts/dndHandler.js',
+          'content/scripts/dappListener.js'
         ],
         matches: [
           '<all_urls>'
diff --git a/app/extensions/brave/content/scripts/dappListener.js b/app/extensions/brave/content/scripts/dappListener.js
index dc394d2c382..afe96a96939 100644
--- a/app/extensions/brave/content/scripts/dappListener.js
+++ b/app/extensions/brave/content/scripts/dappListener.js
@@ -3,20 +3,46 @@
  * You can obtain one at http://mozilla.org/MPL/2.0/. */
 
 const script =
-  `if (window.web3) {
-    if (!window.web3.currentProvider || !window.web3.currentProvider.isMetaMask) {
+  `
+  function __insertWeb3Installed() {
+    if (!window.alreadyInserted) {
       const meta = document.createElement('meta')
       meta.name = 'web3-installed'
       document.head.appendChild(meta)
+      window.alreadyInserted = true
+    }
+  }
+  if (window.web3) {
+    if (!window.web3.currentProvider || !window.web3.currentProvider.isMetaMask) {
+      __insertWeb3Installed()
     }
+  } else {
+    var oldWeb3 = window.web3
+    Object.defineProperty(window, 'web3', {
+      configurable: true,
+      set: function (val) {
+        __insertWeb3Installed()
+        oldWeb3 = val
+      },
+      get: function () {
+        __insertWeb3Installed()
+        return oldWeb3
+      }
+    })
   }`
 
-executeScript(script)
-const isDapp = document.querySelector('meta[name="web3-installed"]')
-
-if (isDapp) {
-  chrome.ipcRenderer.send('dispatch-action', JSON.stringify([{
-    actionType: 'app-dapp-available',
-    location: window.location.href
-  }]))
+if (chrome.contentSettings.dappDetection == 'allow') {
+  executeScript(script)
 }
+
+setTimeout(function () {
+  console.log('checking now for toolbar')
+  const isDapp = document.querySelector('meta[name="web3-installed"]')
+
+  if (isDapp) {
+    chrome.ipcRenderer.send('dispatch-action', JSON.stringify([{
+      actionType: 'app-dapp-available',
+      location: window.location.href
+    }]))
+  }
+}, 3000)
diff --git a/app/extensions/brave/locales/en-US/app.properties b/app/extensions/brave/locales/en-US/app.properties
index 9699bdc39dd..3c784d9f3dc 100644
--- a/app/extensions/brave/locales/en-US/app.properties
+++ b/app/extensions/brave/locales/en-US/app.properties
@@ -239,7 +239,7 @@ walletConvertedBackup=Back up your new wallet
 walletConvertedDismiss=Later
 walletConvertedLearnMore=Learn More
 walletConvertedToBat=Your BTC will be converted to BAT and will appear in your Brave wallet within approximately 30 minutes.
-dappDetected=This page contains a Dapp, would you like to enable the MetaMask extension?
+dappDetected={{origin}} contains a Dapp, would you like to enable the MetaMask extension?
 dappDismiss=No thanks
 dappEnableExtension=Install MetaMask
 windowCaptionButtonMinimize=Minimize
diff --git a/js/state/contentSettings.js b/js/state/contentSettings.js
index 27e67f7c06e..56018d62124 100644
--- a/js/state/contentSettings.js
+++ b/js/state/contentSettings.js
@@ -114,6 +114,10 @@ const getDefaultUserPrefContentSettings = (braveryDefaults, appSettings, appConf
       setting: 'block',
       primaryPattern: '*'
     }],
+    dappDetection: [{
+      setting: getSetting(settings.METAMASK_PROMPT_DISMISSED) ? 'block' : 'allow',
+      primaryPattern: '*'
+    }],
     popups: [{
       setting: 'block',
       primaryPattern: '*'
diff --git a/test/bravery-components/notificationBarTest.js b/test/bravery-components/notificationBarTest.js
index 1b11796e8b4..bec2f63cd20 100644
--- a/test/bravery-components/notificationBarTest.js
+++ b/test/bravery-components/notificationBarTest.js
@@ -38,7 +38,7 @@ describe('notificationBar permissions', function () {
   })
 
   describe('Dapps', function () {
-    it('shows notification bar for Dapps', function * () {
+    it('shows notification bar for Dapps that define web3', function * () {
       let notificationUrl = Brave.server.url('Dapps.html')
       yield this.app.client
         .tabByIndex(0)
@@ -52,6 +52,20 @@ describe('notificationBar permissions', function () {
         }).click('button=No thanks')
     })
 
+    it('shows notification bar for Dapps that use web3 without defining', function * () {
+      let notificationUrl = Brave.server.url('DappsNoDefine.html')
+      yield this.app.client
+        .tabByIndex(0)
+        .loadUrl(notificationUrl)
+        .windowByUrl(Brave.browserWindowUrl)
+        .waitForExist(notificationBar)
+        .waitUntil(function () {
+          return this.getText(notificationBar).then((val) => {
+            return val.includes('Dapp')
+          })
+        }).click('button=No thanks')
+    })
+
     it('does not show when prompt is dismissed', function * () {
       let notificationUrl = Brave.server.url('Dapps.html')
       yield this.app.client
diff --git a/test/fixtures/DappsNoDefine.html b/test/fixtures/DappsNoDefine.html
new file mode 100644
index 00000000000..b02424607ae
--- /dev/null
+++ b/test/fixtures/DappsNoDefine.html
@@ -0,0 +1,13 @@
+<html>
+<head>
+  <meta charset="utf-8">
+  <title>Dapps</title>
+</head>
+<body>
+  This page uses a web3 object without defining it.
+  <div id="result"></div>
+  <script type="text/javascript">
+  	window.web3.currentProvider
+  </script>
+</body>
+</html>
\ No newline at end of file