i know once your hot wallet gets empty, u guys will refill it up with your cold wallet... do u guys have only 1 cold wallet or many? from what i know once a cold wallet is activated online there is risk! and then the cold wallet becomes a hot wallet too
I'll leave it up to Bitfinex to give an official statement on this and the safety of the Bitcoins. I'll just share this: I know for a fact it's both offline and multisig.
We have multiple offline cold wallets, so that what allegedly happened to MtGox will never happen to us (i.e. we will never "discover" one day all the coins are gone).
Thanks a lot and have a good day
Giancarlo
Bitfinex Team