Funky Pigeon has suspended orders and written to customers after the greeting card company was hit by a cyber attack.
Customers who have placed orders in the past 12 months are being informed by email about the attack. Funky Pigeon says "no customer payment data" is at risk.
The company also says it does not believe passwords have been compromised. It has taken its systems offline as a "precaution" and was not taking orders on Tuesday morning.