The nature of the modern military operations conducted on Ukrainian territory has generated a wave of mass emigration focused on the nearest safe areas. Poland, too, as one of the neighbouring countries, is a fundamental migration target for war refugees. Russian armed aggression began in February 2014, and on February 24, 2022 turned into a regular war. As a result of martial law, a number of children, women and the elderly (over 60 years of age) range seek protection on Polish territory. The influx of people became the basis for the creation of an important law of March 12, 2022 on assistance to citizens of Ukraine in connection with the armed conflict on the territory of that country. The legislation regulates the rules of legalization of residence, guarantees access to the labour market, health care, as well as benefits and social assistance. A number of aid measures issued for Ukrainian migrants, high inflation as well as Russian propaganda used for information warfare have negatively affected public sentiment towards factors shaping security. Therefore, an analysis of selected security sectors identifies threats as well as problem areas along with opportunities to ensure security.