Is the Case Law of ECtHR Ready to Prevent the Expansion of Mass Surveillance in the Post-Covid Europe?

The COVID-19 may become a new opportunity for expanding mass surveillance by states. It is already called a security threat, and states are taking appropriate measures to prevent it, including restricting human rights. Abandoning surveillance technology will not be easy after a pandemic and mass surveillance can become the standard for preventing threats. To prevent such a scenario, the approach of the European Court of Human Rights (ECtHR) may be a turning point in the expansion of mass surveillance. The research examines the current case-law of the ECtHR in order to analyse the attitude of ECtHR to mass surveillance. The research is focused on the question whether it can help to prevent the mass surveil-lance to be the norm for the post-pandemic world. The research reveals an increasing bias in case law of the ECtHR towards legalizing mass surveillance and the lack of updating the new criteria for the legality of mass surveillance. Тhe ECtHR is likely to agree with most of the measures that states have introduced to prevent the COVID-19. Authors note that a due attention should be paid to human rights as potentially an effective tool to prevent widespread legalization of mass surveillance. The issue of using invasive tools to regulate mass surveillance, which are now used to resolve the COVID-19 situation, may become even more significant in the future.