Cyber gang, pretending to be Armada Collective, has made more than $100,000 in less than two months by threatening to launch DDoS attack on websites, but never actually launched a single attack. Armada collective is the same criminal gang that was responsible for one of largest DDoS attacks against ProtonMail in November 2015 and extorted $6,000 to stop sustained DDoS assault that knocked its service offline. The criminals also warned the victims that the price will rise if they do not pay the ransom.
Source: https://thehackernews.com/2016/04/ddos-extortionist-ransom.html