2013 — Target: Investigators believe the data was obtained via…

2013 70.0M records affected

Technical writeup

Dec 2013. Investigators believe the data was obtained via software installed on machines that customers use to swipe magnetic strips on their cards when paying for merchandise at Target stores. Originally 40m customers. Now 70m!

Root cause

Hacked

References

http://www.huffingtonpost.com/2013/12/19/target-hacked-customer-credit-card-data-accessed_n_4471672.html?utm_hp_ref=mostpopular