How can exchanges find out Bitfinex funds if "hacker" runs them throught mixers?

[Katadin]

It's hard to do that, considering that Bitcoin is anonymous. And I think that they won't use that kind of public service, they will probably make their own mixer and use it by their own.

Bitcoin is not anonymous. It's pseudonymous. While an address is not by definition linked to a human identity, it certainly can be in many ways if a user is not very careful to cover all tracks.

Making your own mixer with that amount of hot coins would just put a target on your back when everyone realizes that you're delivering tainted coins from the Bitfinex heist to your customers.

So it is better to use a existing big mixing service. But how can you make your coin safe without being identified by the mixer?

The mixer service will not reveal your identity to anyone, if they not forced to do that through legal means. So your coins are safe, if you send it

through these mixers. Even if your coins are clean, it might be mixed with coins that were acquired by illegal means... Nobody knows where their

money came from and how it was used, and this fits with what is happening with fiat money too. Freshly mined coins are the only clean coins. 

Which authority can force the mixer to reveal the identity of the users? Can the police in China to force them?

[Bitcoinpro]

If they where hacked it means that somehow the private keys where hacked

who on earth would put the private keys online anyway, surely for a meagre

amout of funds and to do some automation some private keys would be online

though the majority should be in paper wallets inside safes with insurance,

[n691309]

If a mixer receives coins that are from a known theft, as far as I know they remain neutral to the whole thing and limit themselves to do their job (mix the coins). There are certain sites like Helix that as far as I know are fully automatized, run on a onion tor website and deliver clean coins, after that I would say it's impossible to find, so he would proceed to sell in exchanges. Of course if he isn't a total idiot, he will not dump and will sell slowly so he doesn't get caught.

So in this situation... how can they find them? I wish they find them and people can recover funds but what if he runs coins through mixers?

The mixers does not have the potential to mix all the bitcoins that were hacked so probably the hacker will start mixing the hacked bitcoin by starting with a small amounts so they can't be traced, I don't think that the bitcoin mixers will blacklist these addresses like the exchanges because they have profit from this.

[amacar2]

If they where hacked it means that somehow the private keys where hacked

who on earth would put the private keys online anyway, surely for a meagre

amout of funds and to do some automation some private keys would be online

though the majority should be in paper wallets inside safes with insurance,

The way bitfinex was hacked was not published yet by bitfinex which make it quite doubtful that it may be hack by some insider. How bitfinex can be so careless in putting funds in online storage from which it can easily get hacked.

[TraderETH]

I think exchange can not find out if hacker use bitcoin mixing services, it will be hard to track and bitcoin mixing services will not give their users who has done bitcoin mixing. It is just my opinion if It is happening.

[veleten]

don't you think mixer services are not exactly swiss banks
oh wait ...even swiss banks are obliged to give their customer's account info to the authorities nowadays
long gone the times when the anonimity of your deposit and identity was the swiss banks trademark
what I'm trying to say,that there are concrete people behind every mixer service and sometimes they just could not say no to guys with guns and FBI or ANB
letters on their vests
 

[Patatas]

So in this situation... how can they find them? I wish they find them and people can recover funds but what if he runs coins through mixers?

Tracing coins through exchanges will lead you nowhere!The source of incoming coins would still be hidden if they're not part of a famous wallet which I believe hacker will be smart enough to not list any details on the blockchain.By now,the coins would be mixed already and maybe even I've a part of it bought through exchanges.

[Katadin]

So in this situation... how can they find them? I wish they find them and people can recover funds but what if he runs coins through mixers?

Tracing coins through exchanges will lead you nowhere!The source of incoming coins would still be hidden if they're not part of a famous wallet which I believe hacker will be smart enough to not list any details on the blockchain.By now,the coins would be mixed already and maybe even I've a part of it bought through exchanges.

If the exchanges can cooperate with the authority, it will help a lot to find the criminals and the hacking will reduce.