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Tag Archives: market

Rental attacks mean that blockchains must evolve or die

Abraham Othman Contributor Abraham Othman is a visiting scholar in the Operations, Information and Decisions department of the Wharton School (University of Pennsylvania). He is an advisor to a number of blockchain applications including Augur, Codex, and Decent. Blockchain technologies have a well-earned reputation for hacking and fraud, but the recent theft of more than twenty million dollars of second-tier cryptocurrencies like Bitcoin Gold, Verge, and ZenCash was a fundamental attack on the core mechanisms that allow cryptocurrencies to function. The way that most blockchains (including Bitcoin and Ethereum) function now is called Proof-of-Work; miners must solve hard computational problems to add new blocks of transactions to the chain and the majority (i.e., 51%) of the computational power can determine what transactions appear in the public ledger. In May and June, these second-tier cryptocurrencies suffered from what is called a “51% attack” , where attackers rented more processing power than the honest participants of the network, enabling them to control the transaction register and engage in nefarious behavior. For instance, an attacker could steal from an exchange by sending a deposit of compromised cryptocurrency, cashing it out, and then striking the initial deposit from the public ledger. A new working paper from my friend and occasional collaborator Eric Budish , an economics professor at the University of Chicago’s Booth School of Business , argues that any blockchain with reasonably low transaction fees is fundamentally vulnerable to 51% attacks. The risk of these attacks was known, informally, from the earliest days of cryptocurrency, and to counter this risk exchanges do not immediately credit deposits. Instead, they wait for deposit transactions to “age” on the blockchain in an escrow period. The assumption is that it would be hard for an attacker to control more computational power than honest miners for the whole escrow period. Budish tests this assumption through a sophisticated simulation. He finds that, because it is easier for an attacker with majority compute capability to mine blocks than the honest network, escrow periods provide far less protection than has been thought previously.  Budish’s simulations suggest that increasing escrow periods 100-fold would generally increase the cost to an attacker by less than ten times. The most pointed criticism of Budish’s argument is that it does not match the observed facts of the blockchain ecosystem

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EV startups Alta, Energica, and Zero could reboot the motorcycle industry

Jake Bright Contributor Jake Bright is a writer and author in New York City. He is co-author of The Next Africa . More posts by this contributor MallforAfrica and DHL launch MarketPlace Africa global e-commerce site Nigerian logistics startup Kobo360 accepted into YC, raises $1.2 million Three e-mobility startups are accelerating into the U.S. motorcycle market. Italy’s  Energica  and California based  Alta Motors  and  Zero Motorcycles  have revved up promotion, distribution, and sales. You may see their machines zip by on American roads before the big two-wheel gas powered companies get EVs to showroom floors. These startups could reboot U.S. motorcycle sales while shifting the global motorcycle industry toward electric. The market Since the recession, America’s motorcycle sector has been in the doldrums. New bike sales have dropped roughly 50 percent since 2008—with sharp declines in ownership by everyone under 40.  Chart: MOTOSALES  Most of the market is now aging baby-boomers, whose  “Live to Ride”  days are winding down.

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Tiger Global reportedly pours more than $1B into SoftBank, saying its shares are “undervalued”

Tiger Global has poured more than $1 billion into SoftBank Group, according to the Financial Times . The newspaper reports that the firm told investors SoftBank’s shares are “meaningfully undervalued.” In response to a request for comment, SoftBank sent the same statement to TechCrunch as other media outlets: “We continue to believe the market significantly undervalues our stock and we welcome the support from a sophisticated institutional investor like Tiger Global.” Tiger Global and SoftBank share several investments in common, including Alibaba, Flipkart and Uber. According to a quarterly investor letter obtained by the Financial Times, Tiger Global wrote that “the combination of a world-class set of assets trading at a record discount to net asset value strikes us as an odd anomaly that is unlikely to exist forever.” It also said that “in our view, the opportunity to buy the shares cheaply exists today because SoftBank’s stock has not appreciated in nearly five years, even though the value of its Alibaba stake has increased by over $90 billion, more than SoftBank’s entire market capitalization.” The Financial Times reports that Tiger Global believes SoftBank can create an additional $73 billion of value before tax if its $100 billion Vision Fund returns 2.5 times its original investment over the next seven years. Other growth prospects it cited include the upcoming initial public offering of SoftBank Mobile , its Japanese telecoms unit, and the potential merger of Sprint, which SoftBank holds a majority stake in, and T-Mobile, pending regulatory approval.

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Best of the best iPhone accessories (July edition)

There's what feels like an infinite amount of iPhone accessories on the market. Some are good. Some are OK. Many are just awful. But a select few are amazing. Here are the iPhone accessories that I rely on daily. There's also a special offer here for Hardware 2.0 readers.

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Global Mobile Market Analysising Market Analysis 2018 – Marketo, Nexmo, AppsFlyer, Mashable, Smart Insights … – Cherry Grrl

Global Mobile Market Analysising Market Analysis 2018 – Marketo, Nexmo, AppsFlyer, Mashable , Smart Insights ... Cherry Grrl Global Mobile Marketing Market research Report 2018 to 2023 presents an in-depth assessment of the Mobile Marketing Market including sanctionative technologies, key trends, market drivers, challenges, standardization, regulative landscape, deployment ...

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Hailo raises a $12.5M Series A round for its deep learning chips

For the longest time, chips were a little bit boring. But the revolution in deep learning has now opened the market for startups that build specialty chips to accelerate deep learning and model evaluation. Among those is Israel-based Hailo , which is building deep learning chips for embedded devices. The company today announced that it has raised a $12 million Series A round. Investors include Israeli crowdfunding platform Ourcrowd, Maniv Mobility, Next Gear, and a number of angel investors, including Hailo’s own chairman Zohar Zisapel and Delek Motors’ Gil Agmon. Hailo tells me that it will use the new round, which brings its total funding to $16 million, to further develop its deep learning processors. The company expects samples to rich the market in the first half of 2019. Those chips will be able to run embedded AI applications in a wide range of settings, including drones and cars, as well as smart home appliances and cameras. The key market for Hailo is the car industry, though. In that respect, it’s following in the footstep of other Israeli startups like Mobileye , which Intel eventually acquired. “The 70-year old architecture of existing processors is inadequate to meet today’s deep learning and AI processing needs,” says Orr Danon, Hailo CEO. “Hailo is revolutionizing the underlying architecture of the processor to boost deep learning processing by several orders of magnitude. We have completely redesigned the pillars of computer architecture – memory, control and compute – and the relations between them.”

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