Is the 200 million customers’ money? Are people serious about saving all this service?
That surprises me that people are using this Mixin Safe to store their cryptocurrencies and 200 million is not a small amount.
I don't think the 200 million dollars came from "Mixin Safe", it's the "Mixin Network" that lost $200 million. According to
https://safe.mixin.zone/, they're managing more than a billion dollars. That puts the losses around 20%, and my guess is that includes customer funds.
It is certainly the user's money, although real facts can be manipulated here.
In fact, I am most interested in whether these funds were time-locked. If they are, this hack completely devalues their service's meaning and the whole story.