At the end of July, Orange Belgium detected a cyberattack on one of its IT systems, resulting in unauthorised access to certain data from 850,000 customer accounts. No critical data was compromised: no passwords, email addresses, bank or financial details were hacked. However, the hacker gained access to one of our IT systems containing the following data: surname, first name, telephone number, SIM card number, PUK code, tariff plan.