Distributed denial-of-service (DDoS) attacks started strong this year, setting new records and taking the extortion trend to the next level. Akamai has already dealt with the largest known ransom DDoS (RDDoS) attack, which was also more complex than previously seen incidents of the same type. The perpetrators used a new DDoS attack vector: a networking protocol known as the Datagram Congestion Control Protocol (DCCP) and can bypass the defenses set up for the TCP and UDP traffic flows that are more commonly seen during these incidents.
Source: https://www.bleepingcomputer.com/news/security/800gbps-ddos-extortion-attack-hits-gambling-company/