Popular Supermarket Tesco suffered from a data breach. In this hack more than 2,000 of its customers’ accounts with their personal details were published on Pastebin.
The leaked data included the email addresses, plain text passwords and Tesco Clubcard point balances of 2,239 of the company’s customers.


 The hackers are said to have stolen Clubcard points from customers in a small numbers, which Tesco has agreed to provide refunds for those victims.

In the response of this breach, a Tesco spokesperson said, "We take the security of our customers' data extremely seriously and are urgently investigating these claims.”

“We have contacted all customers who may have been affected and are committed to ensuring that none of them miss out as a result of this. We will issue replacement vouchers to the very small numbers who are affected."

On the paper, the leak number looks small but it have raised the security issue for the Tesco. Tesco was suffered from breach a year ago. In that breach vouchers worth of over a hundred pounds was suddenly disappeared from the customers account.
                                    
According to some security researchers, the hackers compiled the stolen details from other websites and then found that Tesco customers used the same username and password combination as those on previous hacks.

The customers are advised to use a different password for every single online account they own. Also try to avoid the dictionary words which are easy to crack even by just guessing. Use a strong password which include lower case, upper case, numbers, special symbols which are harder to crack.