Data breach

Mastercard Priceless Specials data breach

89,388 accounts · breached August 20, 2019

What happened

In August 2019, the German Mastercard bonus program "Priceless Specials" suffered a data breach. Personal data on almost 90k program members was subsequently extensively circulated online and included names, email and IP addresses, phone numbers and partial credit card data. Following the incident, the program was subsequently suspended.

Description by Have I Been Pwned

What data leaked

  • Email addresses
  • IP addresses
  • Names
  • Partial credit card data
  • Phone numbers
  • Salutations

What to do if you had an account

  1. Turn on two-step sign-in. Enable two-factor authentication where the service offers it, preferably with an authenticator app or a passkey. A leaked password alone is then not enough to get in.
  2. Expect targeted phishing. Leaked contact details are used to write convincing fake messages that mention the breached company or your real name. Do not click links in unexpected emails or texts about this account; go to the site by typing its address.
  3. Watch for scam calls and SIM swaps. Be suspicious of calls and texts that claim to be from your bank or a courier. Ask your mobile operator for a port-out or SIM-change PIN if it offers one.
  4. Check your bank statements. Review recent card and account transactions and report anything you do not recognise. If full card numbers were exposed, ask your bank to replace the card.

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