From hackread.com
Reportedly, the REvil ransomware gang is using DDoS attacks to make huge ransom demands from victim companies VoIP Unlimited and Voipfone.
Two Internet and Telephony Service Providers (ITSP) in the United Kingdom, the South Coast-based VoIP Unlimited and London-based Voipfone, got their services disrupted for several days after suffering a series of Massive DDoS attacks.