Confidence-based authentication

摘要

Disclosed are various embodiments that perform confidence-based authentication of a user. An identification of a user account is obtained from a user, and a minimum confidence threshold is determined. Multiple authentication questions are presented to the user, where the authentication questions are determined based at least in part on stored transaction information associated with the user account. Answers are obtained from the user to a subset of the questions, with each answer having a corresponding authentication point value. A confidence score is generated for the user, where the confidence score is increased by the respective authentication point values of the correct answers. Access by the user to a resource associated with the user account is authorized in response to determining that the confidence score meets the minimum confidence threshold.