How does TSA protect my personal data when I apply for TSA PreCheck, and how can I ensure TSA PreCheck providers do not sell it to a third party?

TSA has strict requirements and protects all applicants’ data. No applicant information can be used for any purpose other than TSA PreCheck enrollment and vetting without the prior consent of the applicant.  Please note, you can opt-in or opt-out to receive marketing promotions / communications at any time through your enrollment provider.  TSA also protects your data by ensuring it is encrypted, stored and transmitted securely using methods that protect the information from unauthorized retrieval or use.