I dunno. If you ask me, it’s sabotage. Bring in the usual suspects.
Still like Laz and others said, very hard to believe they don’t have everything backed up every day. Even back in the early days of computers, serious users had a system in place to organize their backups on 7, 30, even 365 day rotations (discs were expensive so you would keep at least a series of 7 disks for each day of the week for backup). Today with automation it is redundantly stored and backed up constantly.
If it is a very serious hack, it’s probably foreign governmental in nature. Maybe Trump was right, they shouldn’t have been using Huawei routers.
I think it was taken down by FB.
That pyramid level of control is down to very few people in the world.
Taking out layer 2 from the top will do it.