Computer locked by Police Cybercrime Investigation Department

Police Cybercrime Investigation Department warning you see at the image below is a contemporary form of a serious virus infection that targets computers located in Canada (possibly some other countries as well). This is the scam that is classified as ransomware, i.e. the program that hijacks the attacked workstation, locks the screen and accuses users of performing various crimes online. Then the warning says that users must pay the fine to have the workstation unblocked. Of course, you should not ever do as instructed by this scary warning, because the authors of this alert are the crooks who want to become richer through deceiving simple users today.