Here's an email I received yesterday from Kroger/Ralphs supermarkets:
Dear Perry Segal,
Kroger wants you to know that the data base with our customers' names and email addresses has been breached by someone outside of the company. This data base contains the names and email addresses of customers who voluntarily provided their names and email addresses to Kroger. We want to assure you that the only information that was obtained was your name and email address. As a result, it is possible you may receive some spam email messages. We apologize for any inconvenience.
Kroger wants to remind you not to open emails from senders you do not know. Also, Kroger would never ask you to email personal information such as credit card numbers or social security numbers. If you receive such a request, it did not come from Kroger and should be deleted.
If you have concerns, you are welcome to call Kroger’s customer service center at 1-800-Krogers (1-800-576-4377).
The Kroger Family of Stores