olemus
protokollil 3-D Secure põhinenud Visa autentimisteenus, mida alates 2023.a. asendab versioon Visa Secure
= auhentication service provided by Visa, based on the 3-D Secure protocol

ülevaateid
https://en.wikipedia.org/wiki/3-D_Secure
https://chargebacks911.com/verified-by-visa/