Tesco calls the police as online Clubcard accounts compromised

Retail giant says the number of affected accounts is small

Tesco has confirmed that it has called in the police to investigate a possible data breach after a number of complaints from Clubcard members who claim to have had their online accounts compromised.

Clubcard holders informed moneysavingexpert.com that they have found hundreds of pounds worth of vouchers missing from their accounts, with vouchers being spent miles away from where they live, as well as some claiming that their account details have been changed.

Tesco told Computerworld UK that the number of compromised accounts is less than 100 and it is working with the relevant authorities to resolve the issue. The retail giant has 16 million Clubcard members.

"We have launched a thorough investigation into a small number of incidents and referred the matter to the police," said a spokesperson for Tesco.

"In the meantime, we'd like to ask any customers who believe they're affected to contact us directly so that we can make sure their accounts are up to date."

This isn't the first time Tesco's security practices have been brought into question. In August last year the UK's Information Commissioner's Office confirmed that it was 'making enquiries' intoa number of security concerns that had been raised regarding Tesco's customer facing website.

Security researcher Troy Hunt detailed in a blog that he had received a password reminder in an email from Tesco that contained his password in plain text.

Hunt wrote: "Righto, so how exactly was that password protected in email? Well, of course it wasn't protected at all, it was just sent off willy nilly."

Hunt was prompted by his experience to investigate additional security aspects of Tesco's website.

One thing he identified was that although users log into the Tesco website over HTTPS, which "implies a degree of security", the browser reverted back to HTTP, which does not give users security assurances. Hunt said that this can cause problems for data protection and make users vulnerable to hacking.

Join the newsletter!

Error: Please check your email address.
Rocket to Success - Your 10 Tips for Smarter ERP System Selection

Tags securityTescoInformation Commissioner's OfficeIT Business

Keep up with the latest tech news, reviews and previews by subscribing to the Good Gear Guide newsletter.

Derek du Preez

Computerworld UK
Show Comments

Cool Tech

Breitling Superocean Heritage Chronographe 44

Learn more >

SanDisk MicroSDXC™ for Nintendo® Switch™

Learn more >

Toys for Boys

Family Friendly

Panasonic 4K UHD Blu-Ray Player and Full HD Recorder with Netflix - UBT1GL-K

Learn more >

Stocking Stuffer

Razer DeathAdder Expert Ergonomic Gaming Mouse

Learn more >

Christmas Gift Guide

Click for more ›

Most Popular Reviews

Latest Articles

Resources

PCW Evaluation Team

Walid Mikhael

Brother QL-820NWB Professional Label Printer

It’s easy to set up, it’s compact and quiet when printing and to top if off, the print quality is excellent. This is hands down the best printer I’ve used for printing labels.

Ben Ramsden

Sharp PN-40TC1 Huddle Board

Brainstorming, innovation, problem solving, and negotiation have all become much more productive and valuable if people can easily collaborate in real time with minimal friction.

Sarah Ieroianni

Brother QL-820NWB Professional Label Printer

The print quality also does not disappoint, it’s clear, bold, doesn’t smudge and the text is perfectly sized.

Ratchada Dunn

Sharp PN-40TC1 Huddle Board

The Huddle Board’s built in program; Sharp Touch Viewing software allows us to easily manipulate and edit our documents (jpegs and PDFs) all at the same time on the dashboard.

George Khoury

Sharp PN-40TC1 Huddle Board

The biggest perks for me would be that it comes with easy to use and comprehensive programs that make the collaboration process a whole lot more intuitive and organic

David Coyle

Brother PocketJet PJ-773 A4 Portable Thermal Printer

I rate the printer as a 5 out of 5 stars as it has been able to fit seamlessly into my busy and mobile lifestyle.

Featured Content

Product Launch Showcase

Latest Jobs

Don’t have an account? Sign up here

Don't have an account? Sign up now

Forgot password?