Does this explain it well enough? https://arstechnica.com/information-technology/2017/05/thieves-drain-2fa-protected-bank-accounts-by-abusing-ss7-routing-protoc

Does this explain it well enough? https://arstechnica.com/information-technology/2017/05/thieves-drain-2fa-protected-bank-accounts-by-abusing-ss7-routing-protocol/ https://arstechnica.com/information-technology/2017/05/thiev...