Carphone Warehouse has been issued with one of the largest fines by the Information Commissioner’s Office (ICO), after one of their computer systems was compromised as a result of a cyber-attack in 2015.
The company’s failure to secure the system allowed unauthorised access to the personal data of over three million customers and 1,000 employees.
The compromised customer data included: names, addresses, phone numbers, dates of birth, marital status and, for more than 18,000 customers, historical payment card details.
The records for some Carphone Warehouse employees, including name, phone numbers, postcode, and car registration were also accessed.
The ICO considered that the personal data involved would significantly affect individuals’ privacy, leaving their data at risk of being misused.
Information Commissioner Elizabeth Denham said: “A company as large, well-resourced, and established as Carphone Warehouse, should have been actively assessing its data security systems, and ensuring systems were robust and not vulnerable to such attacks.
“Carphone Warehouse should be at the top of its game when it comes to cyber-security, and it is concerning that the systemic failures we found related to rudimentary, commonplace measures.”
Following a detailed investigation, the ICO identified multiple inadequacies in Carphone Warehouse’s approach to data security and determined that the company had failed to take adequate steps to protect the personal information.
Using valid login credentials, intruders were able to access the system via an out-of-date WordPress software.
The incident also exposed inadequacies in the organisation’s technical security measures. Important elements of the software in use on the systems affected were out of date and the company failed to carry out routine security testing. There were also inadequate measures in place to identify and purge historic data.
The Commissioner acknowledges the steps Carphone Warehouse took to fix some of the problems and to protect those affected. She also acknowledges that to date there has been no evidence that the data has resulted in identity theft or fraud.