People with Coles credit card accounts that were opened before 2018 may have had their details compromised by the 2023 Latitude cyber attack. This is because Latitude Financial was the former issuer of Coles credit cards. Latitude Financial has said it is in the process of contacting people affected by the cyber attack and is posting updates on the Latitude website.
Your Coles credit card account would not be affected by the Latitude cyber attack if you opened it in 2018 or later, after Citigroup (and now NAB) became the issuer of Coles credit cards.