The Helldown cybercrime group attacked seven organizations, including two Polish companies: Briju 1920 Limited and Vindix S.A. Stolen data has been published, including:

information about employees,
login details,
PESEL numbers,
residential addresses,
telephone numbers
date of birth.

Helldown claims to have obtained 103GB of data from Briju and 23GB from Vindix. Victims of data leaks should immediately withhold their PESEL numbers.

Source: cyberdefence24.pl