When you enroll in the payment program, the last four digits of the social security number are used for identity verification purposes (in addition to the other information you provided during enrollment), an account security question and to protect you against fraud. The security of your data is very important to our business. Except for providing pertinent information to the participating merchant, we do not resell or disclose any information to a third party. Your enrollment data is kept safe in our secured database servers. This information is encrypted as soon as your enrollment is submitted.