Vocativ has the story: The hacker group Rex Mundi (or “King of the World”) is blackmailing french and Belgian branches of Dominos
Here are Domino’s tweets recommending customers to change passwords
Dominos is asking its customers to change passwords
“Rex Mundi has previously pulled similar stunts, demanding $20,000 from money lender group AmeriCash in 2012. When AmeriCash refused to hand over the ransom, the hackers released the data of 10,000 loan applicants online.”