Reuters reports on a huge data security breach affecting customers of companies that worked with online marketer Epsilon:
The names and e-mails of customers of Citigroup Inc and other large U.S. companies, as well as College Board students, were exposed in a massive and growing data breach after a computer hacker penetrated online marketer Epsilon.
In what could be one of the biggest such breaches in U.S. history, a diverse swath of companies that did business with Epsilon stepped forward over the weekend to warn customers some of their electronic information could have been exposed.
Drugstore Walgreen, Video recorder TiVo Inc, credit card lender Capital One Financial Corp and teleshopping company HSN Inc all added their names to a list of targets that also includes some of the nation’s largest banks. […]
No personal financial information such as credit cards or social security numbers appeared to be exposed, according to the company statements and e-mails to customers.
Epsilon, an online marketing unit of Alliance Data Systems Corp, said on Friday that a person outside the company hacked into some of its clients’ customer files. The vendor sends more than 40 billion e-mail ads and offers annually, usually to people who register for a company’s website or who give their e-mail addresses while shopping. […]
The incident comes three years after hackers penetrated Heartland Payment Systems, a credit and debit card processor, in one of the biggest identity-theft cases in U.S. history.
In that case, notorious hacker Albert Gonzalez led a ring that stole more than 40 million payment card numbers, and was later sentenced to 20 years in prison.