A massive REvil ransomware attack affects multiple managed service providers and over a thousand of their customers through a reported Kaseya supply-chain attack. Huntress Labs’ John Hammond has told BleepingComputer that all of the affected MSPs are using Kasesya VSA, a cloud-based MSP platform that allows providers to perform patch management and client monitoring for their customers. The attack happened midday on Friday, the time to coincide with the July 4th weekend in the USA where staff have a shorter workday before the holidays.
Source: https://www.bleepingcomputer.com/news/security/revil-ransomware-hits-1-000-plus-companies-in-msp-supply-chain-attack/