Several Eastern European banks have started notifying their customers that their cards have been blocked and will be replaced with new ones. Most of the banks did not give out any more details about what happened, and in many cases even failed to notify their customers prior to actually blocking their cards. Rumors indicate the European branch of an electronic payment services provider, Euronet Worlwide, to be the source of this breach. If you have recently received such a notification from your bank, wed like to hear from you, especially if its outside Serbia and Romania.”]
Source: https://securelist.com/thousands-of-european-cards-blocked-following-payment-processor-breach/31569/