A ransomware is any form of malware that prevents a user from accessing their computer until a ransom is paid. The most common form of ransomware is Locky, in which locks the screen of a computer or mobile device making it completely unusable until the instructions are followed. Usually requiring the user to send a sum of money via the dark web to regain access to their device. Due the possibility of having Locky ransomware removed by a computer technician, a more modern and effective type of ransomware is crypto-ransomware. Rather than locking the screen, the computer’s data is encrypted and forces users to pay the ransom to get the decrypt key or risk losing their data forever.