Warning after data of 500,000 Auchan shoppers is targeted in cyber attack

French supermarket Auchan has warned shoppers to be vigilant after the personal details of more than 500,000 customers were targeted in a cyber attack.

The cyber attack has targeted the data of loyalty customers, specifically their names, email addresses, postal addresses, telephone numbers, date of birth, loyalty card number, and family composition (if provided), the retail chain said in an email to affected customers on Tuesday, November 19. 

It said banking details and passwords were not stolen. 

The chain urged customers to be “extremely vigilant due to the risk of fraudulent emails, text messages or calls”. 

It said the cyber attack was contained “very quickly” and “additional security measures” have now been put in place. 

It comes after a number of cyber attacks targeted major French companies in recent months. In October, mobile phone operator Free was the victim of a large-scale cyber attack that stole the details of up to 20 million customers.

Read more: Free Mobile data theft: clients in France warned to look out for scams