Dunkin' Donuts is telling "DD Perks Rewards" account holders some of their personal information may have been compromised.

The company says a third party may have accessed some of their personal information.

Dunkin' Donuts says it learned about the breach back on Oct. 31.

The company is not saying how many accounts were affected, but is already forcing people who may have been impacted to reset their passwords.

Dunkin' Donuts says it's working with law enforcement to try to find who is responsible.