Travelex hack: staff write paper invoices as websites remain down

Currency firm still offline as hackers demand $3m to stop release of customers' data

Travelex staff have had to write out paper invoices for customers as the foreign currency firm continues to be without computer systems after hackers took control, demanding a $3m ransom.

Travelex was forced to take down its global websites on 1 January after criminals attacked on its computer system on New Year's Eve using Sodinokibi ransomware.