IPN UB This is used in Polish surname lists. I need an explanation in English as

Question:

IPN UB This is used in Polish surname lists. I need an explanation in English as to what these letters mean.?

I am starting to check my Polish heritage and posted surnames into a google search and these letters keep coming up in lists, what do they mean?

Best Answer - Chosen by Asker: Hey Rose,

Urz䅤 Bezpiecze儳twa or UB (Office of Security)

Metody Pracy Operacyjnej Aparatu Bezpiecz儳twa wobec ko団io傃𓷠i zwi䅺k㳷 zawodowych 1945-1989, IPN Warszawa 2004 (Methods of operative work of Security organs against churches and trade unions 1945-1989, Warsaw 2004 IPN - [IPN] - Institute of National Remembrance])