Allegiant Air addressed its Payment Card Industry (PCI) compliance challenges by leveraging various technologies, including tokenization and format-preserving encryption, to enhance its data security culture and maintain customer privacy. The airline's innovative use of technology has led to a significant reduction in stored credit card data, ultimately fostering a safer environment for customer information. Allegiant's approach underscores the importance of integrating security into the company's culture through awareness and support from leadership, which is crucial for protecting brand reputation amidst increasing data privacy concerns.