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A pile of Bitcoin slugs sit in a box ready to be minted by Software engineer Mike Caldwell in his shop on April 26, 2013 in Sandy, Utah.

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The hackers who stole around $ 1.4 billion in cryptocurrency from crypto exchange Bybit have move intimately all of the robbed takings and exchange them into Bitcoin , in what experts call the first phase of the money - launder procedure .

On February 21 , Bybit said that a “ advanced onset ” on one of the troupe ’s walletsresulted in the theft of 401,346 Ethereum , worth around $ 1.4 billion at the time , in what is the largest crypto theft in story and mayhap the largest heist of any kind ever . Blockchain monitoring firmsand researchers , as well as the FBI , have charge the North Korean government of being behind the machine politician .

Since the digital robbery , the hackers have moved all the Ethereum they stole out of the dozens of crypto pocketbook they primitively burst the proceeds between and have converted most of the pecuniary resource to Bitcoin , according to Tom Robinson , the carbon monoxide gas - founder and master scientist of crypto monitoring firm Elliptic ; and Ari Redbord , a former federal prosecutor and senior Treasury official who is now global head of policy at TRM Labs , also a blockchain monitoring business firm .

Andrew Fierman , the oral sex of home security intelligence at blockchain monitoring business firm Chainalysis , told TechCrunch that the society is tracking around 90 % of the slip Bybit monetary resource , “ the majority of which have been change to [ Bitcoin ] and are being hold in ~4,400 address . ”

“ The remaining ~10 % of steal finances have been mislay to fees / freezes / off - ramped , ” the company suppose . Off - rampsare military service that turn crypto into immediate payment .

During this first phase between February 24 and March 2 , the North Korean hackers take steps to obscure the origins of the steal cryptocurrency . According to Redbord , the hackers did this by mostly relying on THORSwap , a decentralised communications protocol that enables users to trade assets across unlike blockchains “ without the need for an intermediary . ”

These laundering measure , Redbord said , showed an “ unprecedented level of operational efficiency ” from the cyber-terrorist .

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“ This rapid laundering suggests that North Korea has either expanded its money - laundering infrastructure or that hush-hush financial internet , peculiarly in China , have enhance their capacity to absorb and process illicit fund , ” say Redbord . “ The scale and speed of this operation present new challenges for investigators , as traditional anti - money laundering ( AML ) mechanism struggle to keep pace with the high volume of outlaw transactions . ”

At the same time , both Redbord and Robinson said that this is only the beginning for the hackers .

“ They still have a way to go to benefit from these funds , ” Robinson told TechCrunch .

Redbord explain that , for now , the 2nd phase has entail depositing “ an initial tranche ” of the stolen finances — now Bitcoin — into mixer , which is design to “ make doubt in the trace process ” for police detective . Cryptomixers(or roller ) are serving design to obscure the stemma and destination of someone ’s cryptocurrency by ruffle it with other substance abuser ’ monetary fund .

“ Up to this spot essentially anyone with the patience and willingness could trace the flow of the Bybit funds . Mixers , though , are major hurdles for most investigators , ” said Robinson .

Redbord noted , however , that mixer normally receive a volume of a few million to $ 10 million a daytime so , “ whether these mixers can uphold to draw the amount of money at play is an open question . ”

In other words , while the hackers got a major , disk - cave in amount of loot from Bybit , it ’s still unreadable how much of it the hackers will be able to convert to hard currency .

But there ’s still Leslie Townes Hope for Bybit to recover some of it , according to Robinson .

“ It ’s probable that at least some of these funds will pass through exchanges , where they could potentially be frozen , ” Redbord allege . “ It ’s just a doubtfulness of whether those telephone exchange are aware quickly enough that they are do by stolen plus . ”

After the hack , Bybit offer up a total bounty of $ 140 millionto anyone who could help trace the stock and immobilize them , a process that prevents anyone else from accessing the fund . The company enounce it would pay 5 % of the recovered funds to “ the entity that successfully froze the funds , ” and 5 % to whoever first report the fund and led to them being freeze . As of this writing , Bybit has award only $ 4.3 million to 19 bounty Hunter , according tothe prescribed page of the bounty .

Bybit did not respond to a petition for comment .