# Cyberattacks targeting Polish infrastructure and services > Live situation record from CLSTR: https://clstr.news/situations/cyberattacks-targeting-polish-infrastructure-and-services > Updated: 2026-08-10T10:30:00.000Z. Sources: 11. Developments: 2. Poland has faced a series of cyberattacks targeting critical infrastructure and digital services. In late July 2026, the Central Office for Combating Cybercrime (CBZC) confirmed that Russian citizens involved in organized cybercrime breached a hospital building-management system in Sanok. The attackers altered ventilation settings to a maximum of 28 °C, though no damage to medical equipment or patient safety was reported. By August 10, 2026, the scale of digital threats expanded to include social security and large-scale medical data. A volumetric DDoS attack targeted the Social Insurance Institution (ZUS), paralyzing its website and the PUE/eZUS platform for approximately three hours. Concurrently, the medical documentation platform MyDr reported potential unauthorized access. While the Ministry of Digitalization has not confirmed a full-scale leak, hackers claim to have stolen approximately 18.8 million unique PESEL numbers, medical histories, and prescription data. ## Timeline ### 2026-08-10: Cyberattacks hit Poland's ZUS and medical platform MyDr Poland faces major cyber threats following a DDoS attack on the ZUS social insurance system and a potential massive data breach at medical platform MyDr, involving millions of patient records. 11 sources. https://clstr.news/cluster/zus-hit-by-volumetric-ddos-attack-in-poland ### 2026-07-27: Russian hackers breach ventilation control of Polish hospital, CBZC confirms CBZC confirmed Russian hackers accessed a Sanok hospital's ventilation system, raising temperature to 28 °C. No damage occurred, but the breach underscores hospital infrastructure cyber‑vulnerabilities. 5 sources. https://clstr.news/cluster/russian-hackers-breach-ventilation-control-of-polish-hospital-cbzc-confirms --- Cite as: Cyberattacks targeting Polish infrastructure and services. CLSTR, https://clstr.news/situations/cyberattacks-targeting-polish-infrastructure-and-services