Ustawa z dnia 22 stycznia 1999 r. o ochronie informacji niejawnych

This Polish law establishes the legal framework for protecting classified information within the state. It defines how sensitive data is classified, handled, and stored to prevent unauthorized access and ensure national security. Government agencies, military bodies, and private contractors handling sensitive state information are affected. The law sets strict rules for personnel clearances and the physical and digital security of classified documents.