According to Vodafone UK, criminals used the stolen data obtained from an unknown source to try to access customers accounts. Criminals accessed 1,827 customers accounts, gaining their names, mobile phone number, bank short code and the last 4 digits of their bank account. The company is now working with the National Crime Agency and has already informed the ICO and Ofcom of the issue. No credit or debit card numbers or details were obtained, but it is important to keep in mind that data accessed by criminals could be used for fraudulent activities.”]
Source: https://securityaffairs.co/wordpress/41611/cyber-crime/vodafone-customers-data-accessed.html