Tesco customers' passwords and email details leaked online

More than 2,000 of the supermarket giant's customers affected by online data leak.

Tesco store

Supermarket giant Tesco has deactivated more than 2,000 of its customers' online accounts after their personal details were published on text sharing site Pastebin.

The leaked details included the email addresses, plain text passwords and Tesco Clubcard point balances of 2,239 of the company's customers.

According to a report by the BBC, the data may have been pieced together by hackers using information lifted from other sites and cyber attacks.

It is thought the gleaned email addresses and passwords were then systematically used by hackers to try and access Tesco.com accounts.

In a small number of cases, the hackers are said to have stolen Clubcard points from customers too, which Tesco has agreed to reimburse.

In a statement on the Tesco Facebook page, the company said it was investigating the breach.

"We take the security of our customers' data extremely seriously and are urgently investigating these claims," a company spokesperson wrote.

"We are committed to ensuring that nobody misses out as a result of this. We will issue replacement vouchers to the very small number who are affected."

Trey Ford, global security strategist at security vendor Rapid 7, said the case highlights the perils of using the same login details across multiple online accounts.

"So far the information available indicates the impact of this has been relatively limited stolen vouchers but if attackers have tried this on Tesco.com, the chances are they are also trying it on other sites too and so we may see additional fallout," said Ford.

"This is [a lesson] in consumer behaviour people continue to reuse passwords and other credentials across multiple sites, making it easy for attackers to compromise them. It's essential to learn the lesson from this incident before the cost becomes greater," he added.

Featured Resources

The complete guide to changing your phone system provider

Optimise your phone system for better business results

Download now

Simplify cluster security at scale

Centralised secrets management across hybrid, multi-cloud environments

Download now

The endpoint as a key element of your security infrastructure

Threats to endpoints in a world of remote working

Download now

2021 state of IT asset management report

The role of IT asset management for maximising technology investments

Download now

Recommended

Hackers demand ransom from therapy patients after clinic data breach
Security

Hackers demand ransom from therapy patients after clinic data breach

27 Oct 2020
Amazon sacks employee over data breach
Security

Amazon sacks employee over data breach

27 Oct 2020
Zoom starts rolling out end-to-end encryption for all users
Security

Zoom starts rolling out end-to-end encryption for all users

27 Oct 2020
Insider data breaches set to increase due to remote work shift
data breaches

Insider data breaches set to increase due to remote work shift

26 Oct 2020

Most Popular

How Liberty navigated a site relaunch during a pandemic
Sponsored

How Liberty navigated a site relaunch during a pandemic

8 Oct 2020
Do smart devices make us less intelligent?
artificial intelligence (AI)

Do smart devices make us less intelligent?

19 Oct 2020
Politicians need to stop talking about technology
Policy & legislation

Politicians need to stop talking about technology

21 Oct 2020