Domino’s Pizza customers tell us they have received emails saying they account has been accessed by a third party. Domino’s says its internal systems weren’t breached, but that individual accounts were logged into using a password and email combination stolen from another online account owned by the customer. This is known as credential stuffing. Here’s the email: “We’re getting in touch to let you know that we believe a very small number of Domino’s customer accounts were accessed by an unauthorised third party, and unfortunately your account is one of those affected. We want to reassure you that our security systems have not been breached. We also don’t store any payment details, so no financial information has been accessed. It appears that you have used a password for your Domino’s…