Spanish telecommunications company Telefónica confirms its internal ticketing system was breached after stolen data was leaked on a hacking forum. [...]
source https://www.bleepingcomputer.com/news/security/telefonica-confirms-internal-ticketing-system-breach-after-data-leak/
source https://www.bleepingcomputer.com/news/security/telefonica-confirms-internal-ticketing-system-breach-after-data-leak/