2016 Postbank/Commerzbank — 70K credit cards replaced
Data compromised
Credit card data
Technical writeup
Third parties gained access to credit card data streams at service provider. Postbank replaced 55K, Commerzbank 15K cards. Other banks (Comdirect, Berliner Landesbank, HVB, Volksbanken) also affected.
Root cause
Third-party service provider breach