Reservation data refers to the information collected and stored when an individual makes a booking for services such as flights, hotels, car rentals, or events. This data typically includes personal details like name, contact information, payment details, travel itineraries, preferences, and sometimes sensitive identification numbers. In cybersecurity, reservation data is considered highly sensitive because it can be targeted by cybercriminals for identity theft, financial fraud, or unauthorized access to services. Protecting reservation data is crucial for organizations to comply with privacy regulations and maintain customer trust, requiring robust encryption, access controls, and regular security audits.