On Tuesday night, Verizon Wireless informed customers that its information was involved in the breach: "We have been informed by Epsilon, a provider of Verizon's email marketing services, that your email address was exposed due to unauthorized access to its systems."
Fortunately, Epsilon only had customers' email addresses, and not their billing or personal information. But customers should still be wary of unfamiliar emails, avoid opening unknown attachments, and never follow a prompt to re-enter your billing information. If you receive something fishy, forward it to email@example.com.
Verizon also apologized for the event: "We regret any inconvenience this may cause you. Please be assured that we take the privacy of your information very seriously." But we don't exactly blame Verizon, as the breach was well outside their control.
Credit card companies appear to be the first ones apprised of the potential breach, as they began warning their customers on Monday morning. But Databreaches.net has since been compiling a list of affected companies, which now includes Chase, Citi, Barclays, Capital One, Best Buy, TiVo, Target, and many more.
source: Epsilon via PCMag