Citi Secured Mastercard <p class='sec-title' style='line-height: normal; font-weight: normal;font-size: 16px !important; text-align: left;margin-top: 8px;margin-bottom: 0px !important;'> Citi Secured Mastercard is a credit card with zero interest for 12 months on purchases. It is designed to help people establish a healthy credit score and improve their financial standing. </p> Citi Secured Mastercard Citi Secured Mastercard is a credit card with zero interest for 12 months on purchases. It is designed to help people establish a healthy credit score and improve their financial standing.