Where ransomware comes from
Ransomware is created by scammers who are highly knowledgeable in computer programming. It can enter your PC through an email attachment or through your browser if you happen to visit a website that is infected with this type of malware. It can also access your PC via your network.
How to recognize ransomware
It's obvious when your device has been infected with ransomware, since you most likely won't be able to access your computer.