Xfinity Mobile is an MVNO carrier that runs on both Verizon's LTE networks and seamlessly connects to Xfinity Wi-Fi hotspots around the US when in range. The network has some customers left stranded with their phone numbers stolen by attackers who then used the numbers to commit identity fraud. The issue stemmed from Xfinity Mobile irresponsibly setting account PIN numbers to a default "0000". In the US, this PIN is given to a new phone company along with basic account information in order to permanently transfer the number to a new provider. We're aware of a very small number of...