I’ll elaborate why yes.
This hack seems to be more of a ransomware than a targeted SolarWinds type of attack. From what we know (at the time of writing this), in the information posted by the hackers as well as what Sangoma published in their statements, it seems like the hackers obtained a ton of Accounting/Financial/Employee information.
How much you don’t want to trust Sangoma, I can assure you that they placed the mirror servers under a magnifying glass as soon as they discovered the hack. How much you are afraid of a SolarWind type of hack, they are even more… And I trust Sangoma that if they have spotted something fishy they would’ve taken down the mirror servers, or included that in the statement.
Additionally, some former developers had mentioned: