This MITM sounds like what Sofort payment in Germany did. Absolutely bonkers. You know what's funny? Polish banks also have wire-transfer online payments rough

This MITM sounds like what Sofort payment in Germany did. Absolutely bonkers. You know what's funny? Polish banks also have wire-transfer online payments roughly like Sofort since forever, but without MITM - Przelewy24, PayU et al. They seem to use proper methods to pre-fill wire transfer forms and dedicated accounts in each participating bank to settle the payment immediately.