Poland’s largest digital payment service, BLIK, has suffered periodic outages after being targeted by distributed denial-of-service attacks over the weekend and into Monday. The incidents caused intermittent disruption for customers attempting to complete transactions through their mobile banking apps.
BLIK confirmed that its infrastructure was hit by “external DDoS-type attacks” and noted that mitigation efforts were underway to restore normal service. The platform provides instant payments for online purchases, point-of-sale transactions and ATM withdrawals, processing more than 1.39 billion operations in the first half of 2025 alone. Its popularity has made it a core part of Poland’s financial system, surpassing card usage in online commerce.
Polish Digital Affairs Minister Krzysztof Gawkowski said the attacks originated outside Poland and that state security services are working closely with operators to contain the impact. He also commented on a separate breach involving the travel agency Itaka, which led to leaked customer login details. It is not yet clear whether the two incidents are connected.
The disruption comes as Poland remains on heightened alert for hybrid threats amid ongoing geopolitical tensions in the region. Analysts have warned that high-visibility financial services and national digital infrastructure are increasingly attractive targets for adversaries seeking to spread instability and undermine public trust with geopolitically motivated cybercrime.
While the attacks have been managed without long-term outages, the events highlight how quickly DDoS activity can cause operational challenges for widely used payment systems. Continuous monitoring, fast-acting mitigation and strong upstream protections remain essential as threat levels rise across Europe.
About FastNetMon
FastNetMon is a leading solution for network security, offering advanced DDoS detection and mitigation. With real-time analytics and rapid response capabilities, FastNetMon helps organisations protect their infrastructure from evolving cyber threats.
For more information, visit https://fastnetmon.com