diff --git a/android/app/src/main/kotlin/com/yubico/authenticator/MainActivity.kt b/android/app/src/main/kotlin/com/yubico/authenticator/MainActivity.kt
index 3198751e..fa1f2bfb 100644
--- a/android/app/src/main/kotlin/com/yubico/authenticator/MainActivity.kt
+++ b/android/app/src/main/kotlin/com/yubico/authenticator/MainActivity.kt
@@ -1,6 +1,7 @@
 package com.yubico.authenticator
 
 import android.os.Bundle
+import android.view.WindowManager
 import androidx.activity.viewModels
 import androidx.lifecycle.lifecycleScope
 import com.yubico.authenticator.logging.FlutterLog
@@ -28,6 +29,11 @@ class MainActivity : FlutterFragmentActivity() {
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
 
+        window.setFlags(
+            WindowManager.LayoutParams.FLAG_SECURE,
+            WindowManager.LayoutParams.FLAG_SECURE
+        )
+
         yubikit = YubiKitManager(this)
 
         viewModel.handleYubiKey.observe(this) {