Dunkin Brands Inc. (“Dunkin’”) is writing to provide you with information regarding a recent incident involving your DD Perks account. Although Dunkin’ did not experience a data security breach involving its internal systems, we’ve been informed that third-parties obtained usernames and passwords through other companies’ security breaches and used this information to log into some Dunkin’ DD Perks accounts. One of these may have been your account and we want you to know what happened, as well as the steps we are taking to protect your personal information.

https://www.dunkindonuts.com/content/dam/dd/pdf/Security_Update.pdf