On July 31st, strain M3W appeared on the App store. As far as we can tell, patient zero downloaded the app that day. This whole mess started on that day.
It was published by a developer under the pseudonym TranZo. We have still to track them down. M3W was their first app and they did not pay for any advertisements or promotion. Typically, small apps appear then sit dormant on the store for years. If only we were that lucky in this case.