diff --git a/app/src/main/java/org/mozilla/fenix/search/SearchDialogFragment.kt b/app/src/main/java/org/mozilla/fenix/search/SearchDialogFragment.kt
index f319460c9b..d245a817e3 100644
--- a/app/src/main/java/org/mozilla/fenix/search/SearchDialogFragment.kt
+++ b/app/src/main/java/org/mozilla/fenix/search/SearchDialogFragment.kt
@@ -86,6 +86,7 @@ import org.mozilla.fenix.ext.getRectWithScreenLocation
 import org.mozilla.fenix.ext.increaseTapArea
 import org.mozilla.fenix.ext.registerForActivityResult
 import org.mozilla.fenix.ext.requireComponents
+import org.mozilla.fenix.ext.secure
 import org.mozilla.fenix.ext.settings
 import org.mozilla.fenix.search.awesomebar.AwesomeBarView
 import org.mozilla.fenix.search.awesomebar.toSearchProviderState
@@ -169,6 +170,10 @@ class SearchDialogFragment : AppCompatDialogFragment(), UserInteractionHandler {
             override fun onBackPressed() {
                 this@SearchDialogFragment.onBackPressed()
             }
+        }.apply {
+            if ((requireActivity() as HomeActivity).browsingModeManager.mode.isPrivate) {
+                this.secure(requireActivity())
+            }
         }
     }
 
diff --git a/app/src/test/java/org/mozilla/fenix/search/SearchDialogFragmentTest.kt b/app/src/test/java/org/mozilla/fenix/search/SearchDialogFragmentTest.kt
index e2cff7b995..3d04859139 100644
--- a/app/src/test/java/org/mozilla/fenix/search/SearchDialogFragmentTest.kt
+++ b/app/src/test/java/org/mozilla/fenix/search/SearchDialogFragmentTest.kt
@@ -4,6 +4,7 @@
 
 package org.mozilla.fenix.search
 
+import android.view.WindowManager.LayoutParams
 import androidx.fragment.app.Fragment
 import androidx.navigation.NavBackStackEntry
 import androidx.navigation.NavController
@@ -14,20 +15,27 @@ import io.mockk.every
 import io.mockk.just
 import io.mockk.mockk
 import io.mockk.mockkStatic
+import io.mockk.spyk
 import io.mockk.unmockkStatic
 import io.mockk.verify
 import mozilla.components.browser.state.search.SearchEngine
 import mozilla.components.browser.state.state.SearchState
 import mozilla.components.browser.state.state.searchEngines
 import mozilla.components.browser.state.state.selectedOrDefaultSearchEngine
+import mozilla.components.support.test.robolectric.testContext
 import org.junit.After
+import org.junit.Assert.assertEquals
 import org.junit.Assert.assertNull
 import org.junit.Assert.assertSame
 import org.junit.Before
 import org.junit.Test
+import org.junit.runner.RunWith
+import org.mozilla.fenix.HomeActivity
 import org.mozilla.fenix.components.Components
 import org.mozilla.fenix.ext.requireComponents
+import org.mozilla.fenix.helpers.FenixRobolectricTestRunner
 
+@RunWith(FenixRobolectricTestRunner::class)
 internal class SearchDialogFragmentTest {
     private val navController: NavController = mockk()
     private val fragment = SearchDialogFragment()
@@ -153,6 +161,44 @@ internal class SearchDialogFragmentTest {
 
         verify { fragment.interactor wasNot Called }
     }
+
+    @Test
+    fun `GIVEN app is in private mode WHEN search dialog is created THEN the dialog is secure`() {
+        val activity: HomeActivity = mockk(relaxed = true)
+        val fragment = spyk(SearchDialogFragment())
+        val layoutParams = LayoutParams()
+        layoutParams.flags = LayoutParams.FLAG_SECURE
+
+        every { activity.browsingModeManager.mode.isPrivate } returns true
+        every { activity.window } returns mockk(relaxed = true) {
+            every { attributes } returns LayoutParams().apply { flags = LayoutParams.FLAG_SECURE }
+        }
+        every { fragment.requireActivity() } returns activity
+        every { fragment.requireContext() } returns testContext
+
+        val dialog = fragment.onCreateDialog(null)
+
+        assertEquals(LayoutParams.FLAG_SECURE, dialog.window?.attributes?.flags!! and LayoutParams.FLAG_SECURE)
+    }
+
+    @Test
+    fun `GIVEN app is in normal mode WHEN search dialog is created THEN the dialog is not secure`() {
+        val activity: HomeActivity = mockk(relaxed = true)
+        val fragment = spyk(SearchDialogFragment())
+        val layoutParams = LayoutParams()
+        layoutParams.flags = LayoutParams.FLAG_SECURE
+
+        every { activity.browsingModeManager.mode.isPrivate } returns false
+        every { activity.window } returns mockk(relaxed = true) {
+            every { attributes } returns LayoutParams().apply { flags = LayoutParams.FLAG_SECURE }
+        }
+        every { fragment.requireActivity() } returns activity
+        every { fragment.requireContext() } returns testContext
+
+        val dialog = fragment.onCreateDialog(null)
+
+        assertEquals(0, dialog.window?.attributes?.flags!! and LayoutParams.FLAG_SECURE)
+    }
 }
 
 private val fragmentName = SearchDialogFragment::class.java.canonicalName?.substringAfterLast('.')!!