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Feds arrest couple, seize $3.6B in hacked Bitcoin funds

washingtonpost.com

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Re: Feds arrest couple, seize $3.6B in hacked Bitcoin funds

#91
post #74

I'm sitting here trying to understand their mindset. They had to know what kind of scrutiny would be on those coins forever. At the time of the theft, the coins are worth $100M+ and they can't touch them. Even worse, anything they do with them will be monitored, researched, dug into, and everything else from law enforcement, amateur detectives, and every major tech+crime group. Fast forward to now and the coins are w…

I was wondering about this. I would think the most obvious path would be to find some other criminals (now you've got new risks) who don't care about the provenance of the coins, will pay cash for some coins at a discount, and you somehow launder that cash.... Could at least get a couple bucks from it, possibly.

On the one hand, the mob would probably be happy to buy them for 10-30% face value. On the other hand, how do you contact a reputable mob boss?

Re: Feds arrest couple, seize $3.6B in hacked Bitcoin funds

#92
post #74

I'm sitting here trying to understand their mindset. They had to know what kind of scrutiny would be on those coins forever. At the time of the theft, the coins are worth $100M+ and they can't touch them. Even worse, anything they do with them will be monitored, researched, dug into, and everything else from law enforcement, amateur detectives, and every major tech+crime group. Fast forward to now and the coins are w…

I was wondering about this. I would think the most obvious path would be to find some other criminals (now you've got new risks) who don't care about the provenance of the coins, will pay cash for some coins at a discount, and you somehow launder that cash.... Could at least get a couple bucks from it, possibly.

[deleted]

Re: Feds arrest couple, seize $3.6B in hacked Bitcoin funds

#93
post #60

Earlier quoted context omitted.

With some things, such as the stablecoin USDC, the issuer can prevent specific addresses from transferring them

Which is only possible because it's centralized

A DAO could just as easily decide to do the same, but it'd need to be built into the smart contracts.

Re: Feds arrest couple, seize $3.6B in hacked Bitcoin funds

#94

> “After the execution of court-authorized search warrants of online accounts controlled by Lichtenstein and Morgan, special agents obtained access to files within an online account controlled by Lichtenstein,” the press release said. “Those files contained the private keys required to access the digital wallet that directly received the funds stolen from Bitfinex, and allowed special agents to lawfully seize and rec…

A good guess is that "laundering" billions of dollars is inherently a non-trivial problem, and perhaps not feasible at all without cooperation from shady real-world actors outside the whole cryptocurrency ecosystem. This is actually good news for small-scale users who just want to keep their microtransactions reasonably private - the usual mechanisms might actually work well enough for that case.

Re: Feds arrest couple, seize $3.6B in hacked Bitcoin funds

#95

> “After the execution of court-authorized search warrants of online accounts controlled by Lichtenstein and Morgan, special agents obtained access to files within an online account controlled by Lichtenstein,” the press release said. “Those files contained the private keys required to access the digital wallet that directly received the funds stolen from Bitfinex, and allowed special agents to lawfully seize and rec…

They mention chain hopping and privacy chains. Maybe they slipped up using ZEC and made some of their transactions public?

Re: Feds arrest couple, seize $3.6B in hacked Bitcoin funds

#96
post #14

I ask this every so often during threads regarding stolen cryptocurrency: Is there any solution yet to preventing stolen cryptocurrency funds from being spent? Isn't the only solution to have a central database and require laws to require every transaction to be pre-checked to see if it's stolen funds or not? And not only that, the centralized system will have to be constantly keeping track of wallet mixing to see wh…

what do you think about tornado.cash? It's apparently a very effective mixer. I wonder what law enforcement can do if someone ends up using tornado_cash.

There is absolutely no way of knowing if the money is good or bad. If you consider every mixed_cash as bad, you would be forced to assume that the entire cryptocurrency is bad bec of how the money flows.

Re: Feds arrest couple, seize $3.6B in hacked Bitcoin funds

#97

I'm sitting here trying to understand their mindset. They had to know what kind of scrutiny would be on those coins forever. At the time of the theft, the coins are worth $100M+ and they can't touch them. Even worse, anything they do with them will be monitored, researched, dug into, and everything else from law enforcement, amateur detectives, and every major tech+crime group. Fast forward to now and the coins are w…

[deleted]

Re: Feds arrest couple, seize $3.6B in hacked Bitcoin funds

#98
post #57

> “Today, federal law enforcement demonstrates once again that we can follow money through the blockchain, and that we will not allow cryptocurrency to be a safe haven for money laundering or a zone of lawlessness within our financial system,” said Assistant Attorney General Kenneth A. Polite Jr. of the Justice Department’s Criminal Division. How is this not a total death blow for bitcoin? If the justice department c…

Because there is a weak link in the methods these guys used.

The DOJ always pats itself on the back to pretend to the worldwide audience that there is "no" illicit money in the US financial system.

They don't say "good thing they didn't use X method! that would have hampered our investigation irreparably!" at least not in press releases.

Re: Feds arrest couple, seize $3.6B in hacked Bitcoin funds

#99
post #85
post #68

Earlier quoted context omitted.

Well you don't want to lose those keys ... there is a bit of a conundrum there (granted you don't have to do it the way they did either). As far as how exactly they got caught, there was a reward offered by the company it was stolen from. It may have been someone tipped the feds off for the reward.

I'm not invested in crypto or really at all interested in it. That said, my mentor seems pretty excited about it and is pretty heavily invested as of the past few months. I advised him to do something like https://en.wikipedia.org/wiki/Shamir's_Secret_Sharing and distribute it across a wide number of storage mechanisms, physical, digital, and custodial. For instance, in google drive, in drop box, in a bank safety dep…

I don't understand the math but I think I have seen that style of secret management where any 3 of say 10 secrets can access something but no 2 or any 1 secret can do it.

It would seem to solve a lot of just organizational problems where "jan is out of the office today" and nobody can do the thing ... but if access is spread out among 10 people ... 3 probably are in the office when needed.

Granted I've never seen it used in production personally, not / seen it on a granular level.

Re: Feds arrest couple, seize $3.6B in hacked Bitcoin funds

#100

> “After the execution of court-authorized search warrants of online accounts controlled by Lichtenstein and Morgan, special agents obtained access to files within an online account controlled by Lichtenstein,” the press release said. “Those files contained the private keys required to access the digital wallet that directly received the funds stolen from Bitfinex, and allowed special agents to lawfully seize and rec…

Well, the police had a search warrant, so the police could have found them if they had had them in their possession anyway.

Sure, they could have destroyed them, losing the money but maybe not getting arrested?

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