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Showing posts with label Bitcoin. Show all posts
Showing posts with label Bitcoin. Show all posts

Spectre and Meltdown are a danger for your bitcoins, but there are ways to keep them safe



The recently discovered vulnerability in Intel chips that paves the way for two dangerous exploits — Meltdown and Spectre — is worrisome for nearly every computer user. But for many people, their computers aren't only the place where they store data, they're also their personal banks.
Bitcoin and other popular cryptocurrencies are often stored in wallets — programs that allow owners to access their coins as well as send and receive them. And these wallets, in nearly all their forms, are also in danger.

Simply put, since Meltdown and Spectre can theoretically be used to steal your data, that means they can also be used to steal your cryptocurrency private keys — and that's typically all an attacker would need to empty your wallet.
All PC and mobile users, regardless if they hold Bitcoin or any other cryptocurrency, should most definitely upgrade their operating systems and browsers to the latest versions. We have an overview of the steps you can undertake to protect yourself from these vulnerabilities here.
But if you're dealing with cryptocurrencies, there are a couple of additional things you should know.
The world's largest cryptocurrency exchange, Coinbase, has outlined what the Intel vulnerability means for its users in a blog post on Friday.
The company claims it has prepared for all sorts of possible attacks — be it an attack on its virtual machines running on Amazon Web Services or any other computers in its network.
"We evaluated the impact to Coinbase and we worked closely with AWS to ensure that all of the hosts running our workloads were patched and, as we continue to cycle those workloads, we don’t migrate to unpatched hosts. This effectively mitigates the risk of a cross-VM attack on our systems. We are also patching all of our base operating systems to further mitigate the risk of this vulnerability being used to escalate privilege by an attacker who can gain access through other means," the post said.
As for the steps users should take, they include the ones listed above (patching your OS and browser), and Coinbase also suggests users to store their coins in Vaults, which are a feature on Coinbase that makes your funds a lot more secure than storing them on a trading account.
Popular open-source Ethereum wallet, MyEtherWallet, issued a short warning on Twitter as well.



Ukrainian | Goes with Bitcoins | ATM to bypass Banking System



Ukraine will soon have 150 new ATMs for both buying and selling cryptocurrencies, with around 30 of the machines slated to open by the end of August, The Kiyv Post has learned from Mike Chobanyan, head of the Bitcoin agency in Ukraine.
The devices will allow both selling and buying hryvnias, the national currency, and a variety of cryptocurrencies including Bitcoins, Ethereum (or Ether), Waves, and Golos.
Ukrainian entrepreneurs want to install the ATMs because of the troubled situation with the Ukrainian banking system, which generates problems for businesses, Chobanyan told The Kyiv Post. Using cryptocurrencies allows businesses to bypass the traditional banking sector, he said, declining to reveal the names of the machine buyers.
Chobanyan himself brought the first Ukrainian cryptocurrency ATM to Odessa, a city in southern Ukraine, in April 2017. This device allows users to withdraw amounts of at least 500 hryvnias or 0.1 Bitcoin, around $20 at the current exchange rate.
Bitcoin began being accepted by pioneering Ukrainian merchants as early as 2014.


It's Official: Bitcoin Was The Top Performing Currency Of 2015

For most investors, the major story of 2015 was the expectation and eventual fulfillment of a rate hike, signalling the start of tightening monetary policy in the United States. This policy is divergent to those of other major central banks, and this has translated into considerable strength and momentum for the U.S. dollar.
Using the benchmark of the U.S. Dollar Index, a comparison against a basket of major currencies, the dollar gained 8.3% throughout the year.
Despite this strength, the best performing currency in 2015 was not the dollar. In fact, the top currency of 2015 is likely to be considered the furthest thing from the greenback.
Bitcoin, a digital and decentralized cryptocurrency, staged a late comeback in 2015 to overtake the dollar by a whopping 35% by the end of the year.
Courtesy of: The Money Project
Bitcoin is no stranger to extremes. During the year it came into the mainstream in 2013, Bitcoin gained 5,429% to easily surpass all other currencies in gains. However, the following year it would become a dog, losing -56% of its value to become the world’s worst performing currency in 2014.
The second best performing major currency, relative to the USD, was the Israeli shekel. It gained 0.3% throughout the year, and the Japanese yen (0%) and Swiss franc (0%) were close behind, finishing on par with how they started the year.
The world’s worst performing currencies are from countries that were battered by commodities or geopolitical strife.
Ukraine’s hryvnia fell -33.8% in the aftermath of Crimea. Brazil’s real (-30.5%), the Canadian dollar (-15.9%), Russian ruble (-20.8%), and South African rand (-26.7%) all lost significant value in the purging of global commodities. Gold finished the year down -10%, and silver at -11%.
And as China devaluation accelerates, Bitcoin has been surging since the start of the year...

Bitcoin Dips to $500 After China Blocks New Deposits

BitcoinChina's clampdown on Bitcoin continues, and the virtual currency's prices keep plunging. As of early morning on Wednesday, the price of Bitcoin went down to around $500 across major exchanges, its lowest in nearly a month.
Two weeks ago, China's central bank said Bitcoin was not a currency and thus prohibited local financial institutions from processing bitcoin transaction. Now, the central bank has banned third-party payment companies from dealing in bitcoins, as reported by multiple news outlets.
As a result of these regulations, which put into question the viability of Bitcoin as a currency in China, the global price of Bitcoin has dipped to less than $500, after it hit $1,000 just three weeks ago.
The chart below, from Blockchain.info, shows the plunge in Bitcoin price as a result of China's clampdown.
Bitcoin Price Chart

On Tuesday, the People's Bank of China asked 10 of the largest Chinese third-party payment companies, which account for half of all online transactions in China, to stop dealing in Bitcoin, according to local news reports, a move that will effectively block new deposits of bitcoin into local exchanges.
BTC China, the world's largest Bitcoin exchange, confirmed on Wednesday with a post on its official Sina Weibo account that it would no longer accept deposits in the Chinese currency yuan, as a result of the latest ban.
"For reasons we all know, BTC China has had to cease renminbi [yuan] account charging functions," BTC China announced, according to The New York Times.
BTC China's co-founder Bobby Lee later confirmed the news to the Financial Times. "As of right now, we have received notice from our third-party payment company that they will disallow customers from making deposits into our exchange," he said.
The announcement sent the price of Bitcoin down $200 in less than 24 hours, as Techinasiareported.
With financial institutions banned from processing bitcoin transactions and with this new ban on bitcoin deposits through third party vendors, it is now virtually impossible for Chinese Bitcoin users to buy new bitcoins.
The price of Bitcoin skyrocketed last month in large part due to Chinese users flocking to buy the cryptocurrency and jumping on its global bandwagon. These latest bad news might cause Bitcoin prices to keep dipping, making Cameron Winklevoss' prediction that Bitcoin might hit $40,000 even more unlikely to ever come true.

Bitcoin Prices Plunge After China Cracks Down on Currency

Bitcoin Prices Plunge After China Cracks Down on CurrencyBitcoins

The price of bitcoin surged to $1,000 last month, but it dipped far below that mark just as quickly.
Baidu, China's largest search engine, announced this week that it would no longer accept the digital currency as a form of payment, triggering a steep drop in the price of bitcoin. The announcement, which was posted on the Baidu website, followed a decision from China's central bank to prohibit financial institutions in the country from processing or insuring bitcoin transactions.

Baidu’s website-acceleration platform decided to suspend Bitcoin payment acceptance from Friday, as recent large fluctuations in Bitcoin’s value makes it unable to safeguard users’ interests,” Baidu said in a statement on its website, translated via Bloomberg.
The price of bitcoin, which hit $1,000 for the first time at the end of November and peaked at $1,200 on some exchanges shortly after, has since plummeted to the low $700-range. Its fluctuations can be seen in the chart, below, from Blockchain.info, which aggregates prices across exchanges:
Screen Shot 2013-12-08 at 10.57.46 AM
On BTC China, the country's largest bitcoin exchange that previously helped drive up the currency's price worldwide, the price of bitcoins dropped below $700 at one point, and is currently valued at around $775. The chart, below, from Bitcoincharts.com, shows the drop as measured in Chinese yuan.
Screen Shot 2013-12-08 at 11.22.40 AM