Massive Security Breach Exposes Millions of Emails | LiveScience.com

 

 

Best Buy, JP Morgan Chase, Citi, Walgreens and Capitol One are among a list of major U.S. companies whose email databases were exposed in a massive security breach last week.

The breach occurred March 30 at Epsilon, a Texas-based firm that handles email communications for more than 2,500 clients worldwide, including seven of the Fortune 10 companies. Epsilon sends 40 billion emails annually.

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