What could classify as unauthorized release of renters' information?

Sharing renter information with an uninvolved third party constitutes an unauthorized release of renters' information because it violates the privacy and confidentiality protocols typically established for handling sensitive data. This practice undermines the trust between renters and the rental agency or landlord, who are expected to keep personal information confidential unless there is a legitimate reason to share it, such as legal requirements or the renter's explicit consent.

The other options do not involve unauthorized sharing of information. A customer asking for vehicle maintenance records pertains to service-related information rather than personal renter data. Renting a car without documentation does not involve the release of information, but rather indicates an issue with the rental process itself. A renter requesting to change their insurance is a legitimate inquiry and does not involve sharing information with those outside the rental agreement.