According to Reuters, Tesco is among half a dozen online stores to temporarily close amid an investigation into a possible data breach at PNI Digital Media, which manages and/or hosts photo services sites.

Tesco Photo, which offers services such as printing, photo books and gifts, shut down on Monday.

A message on the Tesco Photo site tells customers that the Tesco Photo website and apps are ‘currently unavailable for you to browse and order’.

Amateur Photographer understands that Tesco has not been given a date when the site will reopen.

A Tesco spokesperson told Amateur Photographer: ‘The Tesco Photo website is currently unavailable while the third-party operator of the site investigates a potential customer data issue related to sites they operate for other retailers in USA and Canada.

‘This is a precautionary measure and at present we have no reports of any Tesco customer data being affected.

‘Customers should contact our customer service team with any concerns.’

Kirk Saville, vice-president for global communications at PNI’s owner, Staples Inc, told Reuters: ‘We take the protection of information very seriously.

‘PNI is investigating a potential credit card data issue, and outside security experts are assisting in the investigation.’

Tesco requests that customers with concerns call 0800 505555.