MastercardPricelessSpecials Data Breach (2019)

"The Mastercard ""Priceless Specials"" loyalty program experienced a data breach that affected about 90,000 members. The breach, discovered in2019, resulted in a database containing sensitive information being shared online. The leaked data included customers' names, payment card numbers, partial credit card data, IP addresses, email addresses, phone numbers, gender, and dates of birth. Mastercard promptly disclosed the incident to data protection authorities and suspended the loyalty program."