The technician should immediately report the incident to their supervisor or the appropriate management personnel. Storing sensitive payment card information on non-compliant systems can result in significant security risks, data breaches, and non-compliance penalties. While securing the information is important, it is imperative first to report the incident following the company's incident response procedures prior to any other actions to ensure proper handling of the situation. Securing the data might still not be compliant with PCI DSS and could potentially tamper with evidence, while destroying the information might lead to loss of critical data needed for an investigation.