KGP:

Downloading and opening the attached file may infect your computer with malware that can steal personal data or lead to the computer being completely locked. The scammers demand a ransom to unlock the computer.

Below is an example of a phishing message:

Przykład wiadomości phishingowejPrzykład wiadomości phishingowej • Photo author: KGP

Police officers:

If you have become a victim of scammers, contact your bank immediately. Change the passwords for all your bank accounts, email accounts and other online portals.

And they emphasize:

Under no circumstances should you pay scammers to unlock your computer! This emboldens criminals, and they continue their attacks against others. There is also no guarantee that paying the ransom will restore control of the computer.

And they advise:

If your computer is locked, you can also seek help on the website of the international project nomoreransom.orghttps://www.nomoreransom.org, in which the Cybercrime Combating Bureau of the Police Headquarters also participates.