“Kaseya said in its statement that a “small number” of companies had been affected, though Huntress Labs said the number was greater than 200.”
REvil didn’t hack 200 companies. It hacked one, the IT tool those companies trusted with admin rights on every machine. It struck on the Friday before July 4th while the defenders went home. Kaseya’s first move was to downplay the count. The count went up.