Consumer e-mail addresses breached

Best Buy Co., TiVo Inc. and Walgreen Co. are the latest in a string of companies to warn over the weekend that hackers gained access to customers’ files, including e-mail addresses.

The companies use the same marketing and communications vendor — Epsilon, a leading firm in that industry. Epsilon, based in Dallas, issued a brief statement Friday saying “a full investigation was under way” of the breach of some customer client data was discovered.

Several of the companies affected said Epsilon informed them of the breach and told them the compromised files do not include any personally identifiable information stored with the marketer.

Best Buy posted a link to a statement Sunday on Twitter, saying it is conducting its own investigation of the breach.

The nation’s largest consumer electronics chain also reminded customers to ignore e-mails asking for confidential information. TiVo and Walgreen issued announcements on Saturday saying some client data had been breached.

J.P. Morgan Chase & Co. and supermarket operator Kroger Co., which also use Epsilon to send e-mails, announced Friday that they were affected by the breach of information.

J.P. Morgan said the affected files did not include customers’ financial details. Kroger said a database with customer names and e-mail addresses was breached, but not any information connected with consumers’ 1-2-3 Rewards Mastercard accounts.

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