Entersekt's 3-D Secure ACS (Access Control Server) is an EMV 3-D Secure solution for secure transaction authentication. It enables low-friction, risk-based 3-D Secure authentication for issuers and processors. 3-D Secure ACS allows issuers to control their e-cardholder experience with customizable payment authentication. It offers insight-driven authentication journeys and cardholder choice to enhance transaction outcomes, reduce fraud, and increase transaction success rates.