Blockchains: How to steal millions in 2^64 operations

LISK

I’ve been reviewing the source code of a number of blockchain thingies, both for paid audits and for fun on my spare time, and I routinely find real security issues. In this post I’ll describe a vulnerability noticed a while ago, and now that Lisk finally describes it and warns its users, I can comment on its impact and exploitability. TL;DR: you can hijack certain Lisk accounts and steal all their balance after only 264 evaluations of the address generation function (a combination of SHA-256, SHA-512, and a scalar multiplication…

Read More

China to coordinate against 3,000 fake blockchain platforms

china wall

The People’s Bank of China, the Supreme People’s Procuratorate, the Supreme People’s Court, the Ministry of Public Security (MPS), the Ministry of Industry and Information Technology (The Five Departments) will join hands to combat internet financial fraud, according to CCTV 2. PBOC is the mainland’s central bank, and currently is the largest bank of its kind in terms of asset holdings. The MPS is its national police force, comprising nearly 2 million officers. Financial innovation in China has come with a cost: darknet crime has grown more sophisticated too, from…

Read More

Maersk and IBM launch blockchain company for global logisics

shipping port global

IBM and Danish transport conglomerate Maersk announced today they are launching a joint venture to redefine the global shipping industry for the blockchain age. The new company, which hasn’t yet been named, will focus on simplifying the complex process of moving goods across different trade zones. The company initially plans to market two capabilities built on IBM Blockchain: a shipping information pipeline that provides a real-time, transparent view of merchandise movement, and smart contracts to replace what is today a slow and paperwork-heavy process. “More than $4 trillion in goods…

Read More

80 % of Bitcoins mined already

bitcoin mining

This weekend marks a milestone for bitcoin as 80 percent of the currency has now been mined into circulation, this means there’s only 20 percent left to mine. Satoshi Nakamoto’s protocol was one of the first to introduce digital scarcity and soon enough the digital asset will become even harder to obtain. There are only 4.2 million Bitcoins left to mine So far on January 13, 2018, 16,800,000 BTC have been mined and there’s only 20 percent left for miners to acquire. When Satoshi Nakamoto introduced the bitcoin protocol to…

Read More

Dubai aiming to be blockchain capital of the world

Blockchain Dubai Smart City

Smart Dubai close to rolling out 20 blockchain-based services. Smart City, the Dubai Government agency entrusted with making Dubai the world’s happiest and smartest city, said it was close to rolling out 20 blockchain applications in a number of civic agencies including the Roads and Transport Authority in order to bring greater efficiency. “Blockchain will improve people’s experience,” Aisha Bint Buti bin Bisher, the director general of Smart Dubai, told The National on the sidelines of Unlock Blockchain Forum on Sunday. “The applications are in various fields, some of them…

Read More

Hackers hijack DNS server of BlackWallet to steal almost 670,000 Lumens

StellarChain

Unknown hackers (or hacker) have hijacked the DNS server for BlackWallet.co, a web-based wallet application for the Stellar Lumen cryptocurrency (XLM), and has stolen over $400,000 from users’ accounts. The attack happened late Saturday afternoon (UTC timezone), January 13, when the attackers hijacked the DNS entry of the BlackWallet.co domain and redirected it to their own server. “The DNS hijack of Blackwallet injected code,” said Kevin Beaumont, a security researcher who analyzed the code before the BlackWallet team regained access over their domain and took down the site. “If you…

Read More

Kraken is still out of service

Kraken exchange updates

Right now Kraken of of big crypto exchanges is still out of service after system update annoucement. People are asking whats happening and going angry, because to be 33 hours (right now according coinmarketcap.com stats) out of the market can cause big loss in the cryptocurrency market which never stop. Current Kraken updates follow: Update We are still working to resolve the issues that we have identified and our team is working around the clock to ensure a smooth upgrade. This means it may still take several hours before we…

Read More

Colonel accepts Bitcoin in Canada now

Colonel accepts Bitcoin now

The “Bitcoin Bucket” costs .0011204 BTC and comes with two dips. The latest item on KFC Canada’s menu will run you .0011204 BTC… Shit, I mean, .0010082 BTC… Wait, now it’s .0011673 BTC? Anyway, it’ll cost you whatever $20 CAD worth of Bitcoin happens to be at the exact moment you buy it, plus $5 in shipping. Yes, KFC Canada is accepting Bitcoin for a limited time, and only for online orders of the the “Bitcoin Bucket,” a new menu item that can be purchased via Bitpay, a popular Bitcoin…

Read More

Government says: No cryptocurrency trading ban in South Korea

Korea no ban crypto

The Blue House, the executive office and official residence of the South Korean President, has announced that there will be no cryptocurrency trading ban in the short-term. In an official announcement, South Korean government reaffirms there will be NO TRADING BAN for #cryptocurrency market in the short term and NOTHING IS FINALIZED. A petition to fire the head of the Ministry of Justice over the #cryptocurrency trading fiasco filed. pic.twitter.com/tb5tDvIV2K — Joseph Young (@iamjosephyoung) 11. ledna 2018 No ban, all FUD The South Korean government’s official announcement came after a…

Read More

XRP will be used for faster international payments by MoneyGram

The global remittance market is a big business. In 2016, remitters sent nearly $600 billion in cross-border payments to help support family members living in their home countries or to settle transactions with business partners. Money transfer companies allow people to send cross-border payments. Unfortunately, the current model requires money transfer companies to use pre-funded accounts across the globe to source liquidity for these payments. The process makes payments costly and slow, which causes headaches for both the companies and their customers. To allow their customers to send and complete…

Read More

Pay in Bitcoin Cash, get refunds in Bitcoin

Overstock refund

Coinbase and Overstock.com just fixed a serious glitch that allowed Overstock customers to buy any item at a tiny fraction of the listed price. Potentially more punishing, the flaw let anyone paying with bitcoin reap many times the authorized bitcoin refund amount on any canceled Overstock orders. In January 2014, Overstock.com partnered with Coinbase to let customers pay for merchandise using bitcoin, making it among the first of the largest e-commerce vendors to accept the virtual currency. On December 19, 2017, as the price of bitcoin soared to more than…

Read More

Warren Buffett swears he’ll never invest in Bitcoin

Warren Buffet

Billionaire investor Warren Buffett told CNBC on Wednesday the recent craze over bitcoin and other cryptocurrencies won’t end well. “In terms of cryptocurrencies, generally, I can say with almost certainty that they will come to a bad ending,” the chairman and CEO of Berkshire Hathaway said. “When it happens or how or anything else, I don’t know,” he added in an interview on CNBC’s “Squawk Box” from Omaha, Nebraska. “If I could buy a five-year put on every one of the cryptocurrencies, I’d be glad to do it but I…

Read More

Miners of cryptocurrencies could require up to 140 terawatt-hours of electricity in 2018

electricity

Bitcoin power usage set to overtake Argentina’s electricity consumption. The global power needed to create cryptocurrencies this year could rival the entire electricity consumption of Argentina and be a growth driver for renewable energy producers from the US to China. Miners of bitcoin and other cryptocurrencies could require up to 140 terawatt-hours of electricity in 2018, about 0.6 percent of the global total, Morgan Stanley analysts said on Wednesday. That’s more than the expected power demand from electric vehicles in 2025. “If cryptocurrencies continue to appreciate we expect global mining…

Read More

Jamie Dimon regrets his ”Bitcoin is a fraud” statement

Jamie Dimon

Jamie Dimon, chair of JP Morgan Chase, was once again asked about his thoughts on bitcoin. In a wide-ranging interview on FOX Business, Mr. Dimon was given a few of his notable quotes back to him, and asked to assess his present feelings. It appears he’s softened a little on the the world’s most popular cryptocurrency, bitcoin, after once referring to it as “a fraud.” Jamie Dimon Warms to Bitcoin Chairman of JP Morgan Chase, Jamie Dimon, sat down for a televised interview with FOX Business Network’s Maria Bartiromo for…

Read More

Eastman Kodak joins cryptocurrency craze with KodakCoin

Eastman Kodak

Kodak, a company that seemed dead and gone with the advent of digital photography, just saw a surge today as it announced the creation of its own cryptocurrency. The so-called KodakCoin will be the token that powers the company’s new KodakOne platform. KodakOne will allow photographers to register their images, license them and search the web for unauthorized usage. CEO Jeff Clarke explained: “For many in the tech industry, ‘Blockchain’ and ‘cryptocurrency’ are hot buzzwords, but for photographers who’ve long struggled to assert control over their work and how it’s…

Read More