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2011 — Epsilon: Epsilon, an email service provider for companies,…

2011 250.0M records affected Share on X

Data compromised

Personal information

Technical writeup

Epsilon, an email service provider for companies, reported a breach that affected approximately two percent of its 2,500 clients. Only e-mail addresses and names were stolen. Epsilon has not disclosed the names of the companies affected or the total number of names stolen. However, millions of customers have received notices from a growing list of affected companies (http://www.databreaches.net/?p=17374), making this the largest security breach ever.The Secret Service is investigating this breac

Root cause

Hacking

References