An anonymous reader quotes a report from The New York Times: American authorities brought criminal charges on Thursday against the owners of one of the world's biggest cryptocurrency trading exchanges, BitMEX, accusing them of allowing the Hong Kong-based company to launder money and engage in other illegal transactions. Federal prosecutors in Manhattan indicted the chief executive of BitMEX, Arthur Hayes, and three co-owners: Benjamin Delo, Samuel Reed and Gregory Dwyer. Mr. Dwyer was arrested in Massachusetts on Thursday, while the other three men remained at large, authorities said. Prosecutors said BitMEX had taken few steps to limit customers even after being informed that the exchange was being used by hackers to launder stolen money, and by people in countries under sanctions, like Iran. "BitMEX made itself available as a vehicle for money laundering and sanctions violations," the indictment released on Thursday said. BitMEX has handled more than $1.5 billion of trades each day recently, making it one of the five biggest exchanges on most days. BitMEX and Mr. Hayes have been known for pushing the limits in the unregulated cryptocurrency industry. After it was founded in 2014, BitMEX grew popular by allowing traders to buy and sell contracts tied to the value of Bitcoin -- known as derivatives, or futures -- with few of the restrictions and rules that were in place in other exchanges. That allowed investors to take out enormous loans and make risky trades. The relaxed attitude also made it possible for people all over the world to easily move money in and out of BitMEX without the basic identity checks that can prevent money laundering. In August, BitMEX put in place some of those verification checks.

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A Swiss region that has billed itself as a hub for high-tech finance said Thursday that it plans to accept cryptocurrencies Bitcoin and Ether for tax payments starting next year. ABC News reports: Switzerland's Zug canton joins its eponymous main city and several Swiss towns in agreeing to take tax payments in cryptocurrency. Zug is thought to be the first region in the rich Alpine country to make the decision. The canton, which bills itself as home to "Crypto Valley," said it would accept taxes from companies or individuals of up to 100,000 Swiss francs (about $110,000) paid in Bitcoin or Ether as of February. A pilot program is expected to be launched in the coming weeks. Taxpayers who want to pay in cryptocurrency would notify tax authorities, who in return would send a digitized QR code that allows for such payments.

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Long-time Slashdot reader leathered shares an investigation from the Correspondent about blockchain -- and " what's so terribly revolutionary about it? What problem does it solve...? I can tell you upfront, it's a bizarre journey to nowhere. I've never seen so much incomprehensible jargon to describe so little... And I've never seen so many people searching so hard for a problem to go with their solution...." [Y]ou can't do much with bitcoin. But blockchain, on the other hand: it's the technology behind bitcoin, which makes it cool. Blockchain generalises the bitcoin pitch: let's not just get rid of banks, but also the land registry, voting machines, insurance companies, Facebook, Uber, Amazon, the Lung Foundation, the porn industry and government and businesses in general. They are superfluous, thanks to the blockchain. Power to the users...! The only thing is that there's a huge gap between promise and reality. It seems that blockchain sounds best in a PowerPoint slide. Most blockchain projects don't make it past a press release, an inventory by Bloomberg showed... Out of over 86,000 blockchain projects that had been launched, 92% had been abandoned by the end of 2017, according to consultancy firm Deloitte. Why are they deciding to stop? Enlightened — and thus former — blockchain developer Mark van Cuijk explained: "You could also use a forklift to put a six-pack of beer on your kitchen counter. But it's just not very efficient...." [I]nformation and communications technology is like the rest of the world — a big old mess. And that's something that we — outsiders, laypeople, non-tech geeks — simply refuse to accept. Councillors and managers think that problems — however large and fundamental they are — evaporate instantaneously thanks to technology they've heard about in a fancy PowerPoint presentation. How will it work? Who cares! Don't try to understand it, just reap the benefits! This is the market for magic, and that market is big. Whether it's about blockchain, big data, cloud computing, AI or other buzzwords... Maybe this is blockchain's greatest merit: it's an awareness campaign, albeit an expensive one. "Back-office management" isn't an item on the agenda in board meetings, but "blockchain" and "innovation" are... Yes, it took a few wild, unmet promises, but the result is that administrators are now interested in the boring subjects that help make the world run a bit more efficiently — nothing spectacular, just a bit better.

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米司法省がテロ組織に関連する資金調達用暗号通貨アカウントなどを差し押さえ、数百万ドルの暗号通貨を押収したと発表しました

A few quintillion possible decryption keys stand between a man and his cryptocurrency. From a report: In October, Michael Stay got a weird message on LinkedIn. A total stranger had lost access to his bitcoin private keys -- and wanted Stay's help getting his $300,000 back. It wasn't a total surprise that The Guy, as Stay calls him, had found the former Google security engineer. Nineteen years ago, Stay published a paper detailing a technique for breaking into encrypted zip files. The Guy had bought around $10,000 worth of bitcoin in January 2016, well before the boom. He had encrypted the private keys in a zip file and had forgotten the password. He was hoping Stay could help him break in. In a talk at the Defcon security conference this week, Stay details the epic attempt that ensued. [...] "If we find the password successfully, I will thank you," The Guy wrote with a smiley face. After an initial analysis, Stay estimated that he would need to charge $100,000 to break into the file. The Guy took the deal. After all, he'd still be turning quite the profit. "It's the most fun I've had in ages. Every morning I was excited to get to work and wrestle with the problem," says Stay, who today is the chief technology officer of the blockchain software development firm Pyrofex. "The zip cipher was designed decades ago by an amateur cryptographer -- the fact that it has held up so well is remarkable." But while some zip files can be cracked easily with off-the-shelf tools, The Guy wasn't so lucky. That's partly why the work was priced so high. Newer generations of zip programs use the established and robust cryptographic standard AES, but outdated versions -- like the one used in The Guy's case -- use Zip 2.0 Legacy encryption that can often be cracked. The degree of difficulty depends on how it's implemented, though. "It's one thing to say something is broken, but actually breaking it is a whole different ball of wax," says Johns Hopkins University cryptographer Matthew Green.

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米司法省が、7月15日に発生したTwitterアカウント大量乗っ取り事件に関与したとして容疑者3人を逮捕・起訴したと発表しました。主犯格はフロリダ州タンパ在住の17歳の少年

アップルの共同創設者スティーブ・ウォズニアックが、自身の肖像を無断使用したBitcoin詐欺動画を放置したとして、YouTubeを相手取り訴訟を起こしました

Twtterは調査の結果、攻撃者がハッキングしたうち最大8つのアカウントから、データをエクスポートしたことを確認したと発表しました

『ソーシャル・ネットワーク』の原作者ベン・メズリックが2019年に発売した書籍『Bitcoin Billionaires』をベースとした映画に、主人公として描かれている双子のウィンクルボス兄弟が制作陣の一員として関わっています。