Dear ista customers,

Currently, ista’s IT-System have been the victim of an external cyber-attack.
As an immediate measure and to help prevent damage to our IT infrastructure, all potentially affected IT systems of the company have been taken offline. As a result, you will temporarily be limited or unable to use certain functions and services. We are very sorry for the inconvenience that this may cause you and ask for your continued patience as we try to resolve the issue.

We have informed the State Data Protection Authority and filed a report with the police. A specialist team of internal and external experts is currently conducting a thorough investigation of the incident and is working at full speed to remedy the disruption as quickly as possible. However, this may take some time.

We therefore continue to ask for your patience and hope for your understanding. Please be assured that we are taking the incident once again as an opportunity to review our extensive existing security measures in order to prevent similar attacks in the future.

Currently, we do not yet know what data the attackers obtained or what data has been accessed. All current information on the current status of the investigation and answers to the most important questions can be found here, which we are continuously updating, as soon as new information arises.

We hope to resume our usual services as soon as possible.

A request can be submitted via contact.ista.be and we also created a hotline:


- Planning department: 0471/01.13.18 and 0471/01.13.21
- Customer Care department : 0471/01.13.32 and 0471/01.13.47

Please understand that given the circumstances, we may not be able to respond to your enquiries as quickly as you would expect.