Hackers have stolen data on more than 600,000 Dominos Pizza Inc customers in Belgium and France, the pizza delivery company said, and an anonymous Twitter user threatened to publish the data unless the company pays a cash ransom. Customer names, delivery addresses, phone numbers, email addresses and passwords were taken from a server used in an online ordering system that the company is in the process of replacing, Dominos spokesman Chris Brandon said on Monday. A Tweet directed at Dominos customers through an account of somebody listed as Rex Mundi said hackers would publish the customer data on the Internet unless the company pays 30,000 euros ($40,800), according to an article in The Telegraph. This does not affect any market outside of France and Belgium, he said via email.