Step 1: Change Login URL from www.example.com/wp-admin to something new like www.example.com/secret
Step 2: Unfortunately, if someone knows the secret URL, and provides wrong ID/Password; will be blocked to login for a specific time
Step 3: Login by your Android phone by a system like Google’s 2-step verification system,
Step 4: You will get notification email, if you or someone enters to Dashboard
I am waiting for you here for 7 days in week, 365 days in year ... Only limitation is I am not interested to provide service for any website which contains or will contain unlawful material, hate speech, nudity or adult elements.