There was a 154 percent increase in the number of DDoS attacks between 2019 and 2020. Ransom-related DDoS (RDDoS) attacks grew in persistence and sophistication, as well as by target. The FBI issued an alert in July warning that common network protocols like ARMS (Apple Remote Management Services), WS-DD (Web Services Dynamic Discovery) and CoAP (Constrained Application Protocol) were being abused by hackers to conduct DDoS reflection and amplification attacks ‘ while cautioning that disabling them could cause a loss in business productivity.
Source: https://www.helpnetsecurity.com/2021/01/29/extortion-demands-grow/