← Epsilon

2011 — Epsilon: Names & email addresses of customers of Barclaycard…

2011 3.0M records affected

Technical writeup

Apr 2011. Names & email addresses of customers of Barclaycard US, Capital One, JP Morgan, Citigroup & other firms have been stolen.

Root cause

Hacked

References

https://www.theguardian.com/technology/2011/apr/04/epsilon-email-hack