The attack, which occurred on Friday (July 2), was reportedly executed by the Russian hacking group REvil who typically encrypt the files of victims before demanding a ransom payment to unlock them.
The group said it wanted a $70m (£51m) payment to free the files “in less than an hour”.
Fred Voccola, CEO of Kaseya, admitted that it was difficult to precisely determine the extent of the damage caused by the attack as the people affected were mostly customers of its own customers.
The firm is working with the FBI and the US Cybersecurity and Infrastructure Security Agency (CISA) to determine the root cause of the attack.
“Our global teams are working around the clock to get our customers back up and running,” Voccola said. “We understand that every second they are shut down it impacts their livelihood, which is why we’re working feverishly to get this resolved.”
In defence of his business, Voccola claimed that the impact of this “highly sophisticated attack...