The article recounts the changes in the security perception of Poles after the outbreak of the coronavirus (SARS-CoV-2) pandemic. Upon utilisation of comparative empirical research carried out in 2020 and 2021, using the diagnostic survey method with the survey techniques, the conclusion confirmed that Poles’ sense of security decreased in 2020 and 2021. According to the respondents’ answers, the most frequent explanation for declining security perception coincides with the threat of contracting the coronavirus. Those include losing a job due to the restrictions introduced in economic activity, determined by the appearance of the coronavirus, and the introduction of restrictions on movement in connection with the occurrences of COVID-19. In addition, the study found that the respondents’ most frequently chosen methods of improving their sense of security include using personal protective equipment, avoiding contact with other people, and refraining from leaving their homes.