Ransomware locks or encrypts data on a device and then demands a ransom for the key to release it. The first quarter of 2016 saw a huge spike in samples of ransomware as it becomes fashionable among malware writers. Victims feel the effect of cybercrime very directly and severely than they do those of other types of attacks. The No Ransom project initiated by Kaspersky Lab and the Dutch Police collects decryption keys and is able to help many victims although not all of them.”]
Source: https://informationsecuritybuzz.com/articles/rise-ransomware-time-stop-paying/