It has been reported that Bitstamp's hacker(s) sent all stolen coins, circa 19k to this address: 1L2JsXHPMYuAa9ugvHGLwkdstCPUDemNCf
https://blockchain.info/address/1L2JsXHPMYuAa9ugvHGLwkdstCPUDemNCf

Furthermore blockchain.info has tagged the address as "Bitstamp Hack" making it quite simple via a "taint analysis" to check whether any incoming bitcoin payment contains any traces of these stolen coins.

The really interesting issue here is whether the thief or thieves will ever be able to spend any of these coins without being caught. This is the ultimate real life experiment in Bitcoin's anonymity.

As far as I can see the bitstamp hacker will have a hard time laundering these coins in any sizeable amounts.

Please post your views.

whats the point of mixing it is it easier to sell it then?

it is really the beauty of the anonymity of bitcoin. But this time it hits the confidence of bitcoin holders hardly! Hopefully it will go through quickly!

Well, that is the thing. If no one would accept those coins or any that originated from those wallets it could be stopped. But, highly unlikely.

There are plenty of places where the receivers don't mind to accept these coins.

The thief most likely will get clean coins or fiat in return.

Perhaps by selling them well below current value at some point.

it is so simple to cash out and then to deposit these money without any question from anybody. you just have to think that Bitcoin allows the money laundering and nothing more.

Deposit the money without any question from anybody? In most (western) countries, banks are obligated to report transactions above a certain amount (that amount typically being well below the $100K or equivalent in local currency) or bunches of transactions that appear correlated and add up to an amount above this limit.

Simply dumping $5M on a bank account is going to raise some eyebrows with the hackers local tax department, which in turn might alert law enforcement. So unless the hacker lives in a country with sufficient bank secrecy it might be quite difficult to profit from his newly found wealth.

This is true.  In America, the IRS gets raised flags when you deposit something like $10k or more at a time in your bank account.  

So unless this guy plans on cashing to fiat and living off cash payments or re-distributing the wealth by giving it to his associates/family...he's going to have people in higher places watching his moves and ultimately questioning where it came from.

Looks like he's already starting to use mixers to 'clean' the coins stolen.  That's pretty cool blockchain can mark the funds as tainted/hacked, but ultimately there are still ways to get around this.

There are tens of countries where you do not pay taxes from foreign income. I guess the thief - if he feels that what you say is a problem - can go there and buy residency for one year.

The point of mixing coins is to prevent your identity from being associated with the theft when you go to sell the coins on an exchange. If the hacker were to sell them he would probably mix them first and then sell them on an exchange.

It would be possible that someone would purchase the coins then eventually sell them on an exchange, then be questioned by law enforcement about how they came into possession with the coins.