TiVo announced today that we were informed by Epsilon, a third-party e-mail marketing vendor who TiVo and other companies use to manage email communications, that an unauthorized person outside their company accessed files that included e-mail addresses of some TiVo customers. "We were advised by Epsilon that the information that was obtained was limited to first name and/or email addresses only," Tivo said in a statement.

Epsilon does not have access to service information or credit card details and all such personally identifiable information remains secure, Tivo added.

Other companies including JP Morgan Chase and Kroger, Best Buy and the US College Board were also impacted by this breach and Epsilon is conducting a full investigation.