Domino's Pizza UK has emailed its customer base advising a password change on their My Domino's account “as soon as possible”.
According to Domino's Pizza, this is in light of recent data breaches, which could leave those who reuse their passwords on multiple websites open to fraudulent activity on their account.
The firm said that it has not been hacked, and is only erring on the side of caution so as to avoid fraudulent account activity.
The firm added, "To be absolutely clear, we have no evidence to suggest there has been a breach of Domino's systems."
The email to customers suggested that "a small handful" of its customers had been the victim of cyber-scams that stole their password, which was then used not just for their Domino's account, but on other websites as well.
A similar incident happened recently with a food delivery service which saw customers paying for food which they did not order, with the company blaming criminals accessing accounts with credentials stolen from other data breaches.
Domino's is advising, "a different and unique password" for each online account.
It says that doing so will greatly reduce a customer's chance of multiple accounts being accessed if one of their passwords becomes compromised.
Domino's also says customers should check their bank account for any suspicious activity, and notify their bank immediately if they notice anything unusual.
The news follows several major firms who have become victims of data breaches in recent weeks, the biggest of which is the data breach at internet company Yahoo, which saw a billion customers have their credentials stolen.
The breach, which occurred back in 2013 but was only revealed this week, saw details such as names, email addresses, telephone numbers, dates of birth, and hashed passwords concerning Yahoo accounts all stolen by hackers.