Earlier this week, the company developing remote management software faced a ransomware attack supposedly by Russian hacking group REvil.

In a statement, FBI said: "The FBI is investigating this situation and working with Kaseya, in coordination with CISA, to conduct outreach to possibly impacted victims."

"We encourage all who might be affected to employ the recommended mitigations and for users to follow Kaseya's guidance to shut down VSA servers immediately. As always, we stand ready to assist any impacted entities," read the statement.