Self-proclaimed ethical hacker leaks millions of medical records in Poland

An individual claiming to be an ethical hacker from the group 'Fingerprint' has stolen and leaked data of millions from Polish medical services MyDr and Fakturownia, including PESEL numbers. The hacker says they will not sell the data and will assist firms with security, while staying in contact with CERT Polska. The incident is ongoing, with attribution to a Polish actor suspected but not confirmed.