← Cardsystems Solutions Inc.

2005 — Cardsystems Solutions Inc.: Over 40 million card accounts were exposed to…

2005 40.0M records affected Share on X

Data compromised

Personal information

Technical writeup

Over 40 million card accounts were exposed to potential fraud due to a security breach that occurred at a third-party processor of payment card transactions. Of the more than 40 million accounts exposed, information on 68,000 Mastercard accounts, 100,000 Visa accounts and 30,000 accounts from other card brands are known to have been exported by the hackers. The data exported included names, card numbers and card securi

Root cause

Hacking

References