The Bettys Tea Rooms firm’s website was hacked on Wednesday, affecting more than 120,000 customers.
In a statement released by the company, they apologized, and blamed "industry-wide software weakness" for the data breach.
The hackers gained access to the firm’s website database, and stole the personal details of the customers which includes their names, email addresses, postal addresses, encrypted passwords and telephone numbers.
"We would like to stress that your credit or debit card details have not been copied as this information is stored on a completely separate system managed by a certified third party. Bettys takes customer confidentiality extremely seriously and, whilst customer passwords were encrypted, it is important that you change your password as soon as possible by clicking this link or entering www.bettys.co.uk into your browser," Bettys said.
They also advised their customers to not to respond to any of the phone or email communication regarding their personal and financial information.
"To be clear, Bettys will never contact you and ask you to share any personal financial information," the tea shop chain said.
Gang of old ladies named 'Northern N00bz' is suspected to be behind the data breach. To take revenge for some disservice, they acquired some coding skills. A full investigation is going on.