Fortnum & Mason has said it has reached out to around 23,000 customers in regards to a data breach.
The heritage retailer said in a statement that on Friday last week, Typeform, a firm that provides services it has used in the past to collect survey responses, notified the store “that they had suffered a data breach and unfortunately some of our data had been compromised”.
It said that the 23,000 people affected were competition and survey participants who inputted into a Typeform form.
Fortnum & Mason said that for the majority of people, only their email address was exposed.
It added that for a smaller proportion of customers, other data such as addresses, contact numbers and social media handles had compromised.
“No-one’s bank details or passwords have been involved, and money and accounts are safe,” Fortnum & Mason said.
“All those affected have been contacted.”
It added: “There has been no breach of Fortnum & Mason’s website or database, and all data which we hold is unaffected by this breach.”
It said Typeform forms on the store’s website have been disabled.
Fortnum & Mason said Typeform has now fixed the root cause and were undertaking forensic investigations.
The data breach is the fourth such breach to have been revealed this month.
Dixons Carphone first revealed that six million customers’ data had been accessed in a breach that is now being investigated by GCHQ.
Last week alone, Ticketmaster revealed that 40,000 customers’ payment and personal data had been hacked while Adidas cautioned its US customers that they may have been exposed to a data security incident.