[celticninja]

Not if you think about it properly. Hacker deposits 10 BTC to a mixer, except he sends it as 20 transactions of between 0.1 and 0.9 btc each transaction. These are all sent to unique addresses belonging to the mixer and are never reused.

So now the hacker has 10BTC in the mixer, he requests to be paid out to a list of 20 addresses. These addresses are sent between 0.1 and 0.9btc until the mixer has sent out 9 BTC (taking a 10% commission for the service).

None of those hacker controlled addresses have any connection with one another and they have zero connection to the original deposits made by the hacker.

There are also another 10 hackers doing exactly the same thing, so now we are looking at hundreds of transactions. So it becomes very difficult to connect the dots, also if you really could connect the dots easily I imagine that the FBI et al would really like to speak to you.