Google is adding support for the Password Checkup service to Android applications through the passwords autofill feature. The service will warn users if their saved passwords have been compromised or leaked in data breaches. Google is now adding it to the Android ‘Autofill with Google’ feature which fills out forms automatically with saved info, including credentials, addresses, or payment info. The password check is performed locally using a limited set of matching breached credentials with the same first two has bytes being used for the actual check.
Source: https://www.bleepingcomputer.com/news/security/google-adds-password-checkup-support-to-android-autofill/