The NYAG say Bitfinex believes the cash was stolen. Bitfinex in their statement say "we have been informed that these Crypto Capital amounts are not lost but have been, in fact, seized and safeguarded". These two statements conflict with one another.
neither the NYAG nor bitfinex could actually confirm the $850m in crypto capital funds held on behalf of bitfinex was seized:
https://bitcoinmagazine.com/articles/bitfinex-faces-legal-action-from-ny-attorney-general-heres-what-this-means/so we're not really sure if it was stolen or seized. in the end, it doesn't really matter and bitfinex is clearly spinning things. the important fact is that bitfinex lost access to $850m, couldn't process its customer fiat withdrawals, and dipped into tether funds to cover the shortfall. depending on other assets held by bitfinex/tether, they
may not be insolvent. but this certainly suggests they are.
Bitfinex took a loan from tether for the amount of the money that is inaccessible, so they can process customer withdrawals.
I don't think bitfinex has $850M+ in reserves because they have a practice of paying most of their operating earnings to shareholders. They invested in a small number of altcoins, IOTA being most notable, but altcoins have performed very poorly, and I don't know how much these investments will help.
Based on the above, I don't think bitfinex is solvent. I am comfortable saying I believe they can pay out all customer deposits because of the loan from tether.
So it's possible Bitfinex hasn't done anything wrong, with Crypto Capital the only culprit? Hmmm...
Bitfinex does not currently have access to $850M worth of USD. Some of this money is customer deposits, and bitfinex did not disclose this to the public until the NYAG disclosed this fact for them.
The failing to disclose the missing USD is probably something most of their customers will frown upon.