Sports betting odds provider Don Best has warned customers that it suffered a data breach during its integration with new owner Scientific Games Corporation.

Last week, customers of Don Best Sports Corporation and DBS Canada Corporation reported receiving emails warning them of a “data security incident” that occurred last October. The incident wasn’t discovered until late December, during the Don Best companies’ integration with new owners Scientific Games.

The email claimed that “unauthorized individuals” had accessed a Don Best database as a result of a “malware attack” that occurred between October 12-28, 2018. The unauthorized user(s) are believed to have accessed data including customer names, addresses, phone numbers and user names (email addresses) and passwords.

The Don Best email stressed that while the database in question also stored credit card info, “our investigation indicates that no credit card information was accessed or acquired.” Don Best said it is resetting all customer passwords and has taken other “steps to remove the malware and to further improve the security” of its network.