Showing posts with label bitcoin forums. Show all posts
Showing posts with label bitcoin forums. Show all posts

Tuesday, 25 February 2014

Bitcoins, other digital currencies stolen in massive 'Pony' botnet attack

Bitcoins, other digital currencies stolen in massive 'Pony' botnet attack


Cybercriminals have infected the computers of digital currency holders, using a virus known as “Pony” to make off with account credentials, bitcoins and other digital currencies in one of the largest attacks on the technology, security services firm Trustwave said.
The attack was carried out using the “Pony” botnet, a group of infected computers that take orders from a central command-and-control server to steal private data. A small group of cybercriminals were likely behind the attack, Trustwave said.
Over 700,000 credentials, including website, email and FTP account log-ins, were stolen in the breach. The computers belonging to between 100,000 and 200,000 people were infected with the malware, Trustwave said.
The Pony botnet has been identified as the source of some other recent attacks, including the theft of some 2 million log-ins for sites like Facebook, Google and Twitter. But the latest exploit is unique due to its size and because it also targeted virtual wallets storing bitcoins and other digital currencies like Litecoins and Primecoins.
Eighty-five wallets storing the equivalent of $220,000, as of Monday, were broken into, Trustwave said. That figure is low because of the small number of people using Bitcoin now, the company said, though instances of Pony attacks against Bitcoin are likely to increase as adoption of the technology grows. The attackers behind the Pony botnet were active between last September and mid-January.
“As more people use digital currencies over time, and use digital wallets to store them, it’s likely we’ll see more attacks to capture the wallets,” said Ziv Mador, director of security research at Chicago-based Trustwave.
Most of the wallets that were broken into were unencrypted, he said.
“The motivation for stealing wallets is obviously high—they contain money,” Trustwavesaid in a blog post describing the attack. Stealing bitcoins might be appealing to criminals because exchanging them for another currency is easier than stealing money from a bank, Trustwave said.
There have been numerous cyberattacks directed at Bitcoin over the last year or so as its popularity grew. Last year, a piece of malware circulating over Skype was identified as running a Bitcoin mining application. Bitcoin mining is a process by which computers monitor the Bitcoin network to validate transactions.
“Like with many new technologies, malware can be an issue,” said a spokesman for the Bitcoin Foundation, a trade group that promotes the use of Bitcoin, via email. Wallet security should improve, the spokesman said, as more security features are introduced, like multisignature transactions, he said.
Digital currency users can go to this Trustwave site to see if their wallets and credentials have been stolen.
Post Source: http://www.pcworld.com/article/2101260/bitcoins-other-digital-currencies-stolen-in-massive-pony-botnet-attack.html


                                                   

                                                                                                       

Friday, 7 February 2014

Apple Kills Last Bitcoin App

Apple Kills Last Bitcoin App


Bitcoin wallets are getting blocked from the App Store

Apple removed the last remaining app used to exchange the digital currency Bitcoin from its App Store on Wednesday.
Blockchain, the bitcoin wallet app, said on its blog that it had no prior warning it would be barred from the store or prompting it to make changes to that app. It said Apple’s only explanation was “unresolved issues.”
Other bitcoin-related apps like Coinbase, Gliph and CoinJar have also been removed from the store. While Bitcoin isn’t illegal, it’s also not recognized as legal currency by governments, TechCrunch notes. This could conflict with section 22.1 of the App Store’s review guidelines, which states that “apps must comply with all legal requirements in any location where they are made available to users. It is the developer’s obligation to understand and conform to all local laws.”
Google’s Android platform still allows developers to create and maintain bitcoin wallet apps.
Source: http://business.time.com/2014/02/06/apple-bitcoin-blockchain-app-store/
                                                   

                                                                                                       

Wednesday, 5 February 2014

Marc Andreessen Predicts Bitcoin Will Change Chip Design Forever

Marc Andreessen Predicts Bitcoin Will Change Chip Design Forever


Silicon Valley venture capitalist Marc Andreessen believes digital currencies could change the way processors are designed.
Andreessen doesn’t exactly need an introduction. An avid bitcoin advocate, he tends to be quite outspoken – putting his money where his mouth is through investment firm Andreessen Horowitz.

Turning data centres into mining rigs

Speaking at the Open Compute Summit last week, Andreessen said that mining is at the heart of bitcoin, as it handles all computation needed to maintain the trust network, reports TechWeek Europe. He added:
“The press reports on mining as a waste of time, but in reality it’s all the proof of work computation that makes a distributed trust network work.”
Andreessen added that cryptocurrency mining is a “very big thing” and that we are still in the very early stages of it. This is where Andreessen sees an opportunity for chipmakers.
Custom mining chips are nothing new, but few people expected the rise of ASICs to transform the mining scene in such a short time. Andreessen believes custom chips will dominate mining for quite a while, but things could take another unexpected turn.
Andreessen told the gathering that his company has already received pitches for bitcoin optimised data centres. However, it is unclear what such pitches would entail in terms of hardware.
Using standardised server racks to add a bit of mining power to existing data centres is one option, as it would essentially add a few ASICs to a huge data centre.
Another farfetched scenario would be the emergence of custom chips that can deal with standard workloads and mining. In theory, this could be done by adding specialized circuits to x86- or ARM-based server parts, but it is simply not practical for the time being, either on-die or in the same chip package.

Opportunities and pitfalls

Although Andreessen is rather optimistic, there are quite a few problems with bitcoin mining hardware that may keep it out of data centres for a while. Economies of scale are the most obvious challenge, the sheer pace of development is another.
Using existing infrastructure for mining is a tantalizing prospect, but with huge performance gains offered by every new generation of ASICs, deploying bitcoin mining hardware in a server setting would be a rather risky investment.
Once the hardware goes out of date, it would practically become a useless drain.Chipmakers go to great lengths to shave off a few watts from their server processors and to increase their life cycle by making them future proof, thus reducing the total cost of ownership. Adding bitcoin mining features to them could have the exact opposite effect.
In addition, the market for bitcoin mining hardware remains limited. Wedbush Securities estimates that the total market for bitcoin mining hardware stood at $200m in 2013.
It isn’t a small market, until you compare it to overall semiconductor sales. To put things into perspective, Gartner puts the revenue generated in the server space in 2013 at more than $12bn a quarter.
Image Credit: Fortune Live Media / Flickr
Post Source: http://www.coindesk.com/marc-andreessen-bitcoin-change-chip-design-forever/
                                                   

                                                                                                       

Hotels Now Accept Bitcoins

200,000 Hotels Now Accept Bitcoin Through Online Travel Agency CheapAir


California-based travel agency CheapAir.com has announced that it is expanding its service to allow bitcoin users to book hotel stays with the cryptocurrency.
CheapAir has been accepting bitcoin for flight bookings since Novemberwhen it partnered with Coinbase, however until today, users have not been able to pay in bitcoin for its extensive hotel inventory.
Speaking to CoinDesk, CEO and founder Jeff Klee voiced his enthusiasm for becoming the “first company in the US” to allow bitcoin users to book hotel stays with the virtual currency:
“Bitcoin gets a bad rap in mainstream media. What I found is that the people who use bitcoin are great, they’re passionate and they’re looking to solve a lot of the problems inherent in the economic system and the world.”
The news garnered a largely positive reaction on reddit and the BitcoinTalk forum, with ambitious bitcoin users even suggesting they would pass the news along to other travel companies that have expressed a cautious interest in bitcoin.
cheapair, bitcoin

Better-than-expected return

For it to become a really big part of our business, bitcoin itself needs to grow. We think it will.
Klee indicates that the decision to expand its program to include hotels was due to a “better than anticipated” response from the community after it began accepting bitcoin payment for flights.
“We had no idea what to expect, however, it generated a nice enthusiasm,” Klee recounts.
Klee did not share specific numbers, but did say that bitcoin customers are more likely to become loyal than traditional customers, and that his company receives “a nice volume of emails from bitcoin customers”. Still, despite these benefits, he won’t call bitcoin a game-changer for CheapAir just yet, though he thinks CheapAir’s position could change as the currency gains more loyal users.

How CheapAir pays hotels

For CheapAir, paying hotels and flight providers is still a challenge, but one they find worthwhile given the currency’s dedicated customers and engaged base. Klee noted that in order to process transactions, CheapAir must accept the bitcoin and exchange it for fiat currency before paying hotels. This means certain hotels, those that require patrons to pay at checkout, will still be off limits to bitcoin customers.
Klee notes that “once in a while you’ll see a hotel on our site that won’t have a bitcoin logo by it”, but that the majority of properties on the site will see the bitcoin logo clearly displayed on its listings.
Source: http://www.coindesk.com/200000-hotels-accept-bitcoin-cheapair/
                                                   

                                                                                                          

Tuesday, 4 February 2014

Bitcoin ATM in Singapore

Singapore’s First Bitcoin ATM to Arrive in March


A Singapore company is planning to install the island’s first bitcoin ATM by April.
The firm, Bitcoin Exchange, has purchased a Lamassu unit that it expects will arrive mid-March. It plans to install more ATMs if the first unit is well received. Zann Kwan, one of the company’s directors, said:
“The good thing is that the Singapore government has left bitcoin alone. It’s treated like silver or gold, and if you want to [deal in it] it’s at your own risk. The ATM will create a lot more interest in bitcoin.”
According to Kwan, the machine’s location hasn’t been decided just yet. The company is looking for a location inside one of Singapore’s many shopping malls.
Kwan made it clear that the ATM would not charge a fee for each transaction, supplying bitcoin at a premium to market rates instead. She said the company had not decided what exchange it would take its rates from yet.
The Singapore bitcoin economy has been growing, although it’s still mainly driven by early adopters, she added:
“There are a few bars that are accepting bitcoins now, and people are talking about it. But you need a few people to start the ball rolling, then the momentum will pick up.”

Bartini Kitchen

bar
One of the republic’s cryptocurrency-accepting bars is Bartini Kitchen. The cocktail bar and restaurant, located in the heart of the city’s financial district, began accepting bitcoin payments at the end of November.

Several customers have paid for their food and drinks from Bartini Kitchen’s modern European menu in bitcoin since then, according to bartender Amir. He said:
“There’ve been just a few transactions, not many of our customers know about bitcoin. But overall, it’s been a positive response.”
Bartini Kitchen draws a cosmopolitan after-work crowd from the office towers that dominate the skyline in this part of town. The restaurant is part of a group of seven other bars and eateries, including a Japanese restaurant called Mariko’s that also takes bitcoin.
According to Amir, the group’s management are keen bitcoin supporters. Bartini’s mixologists are led by Barnaby Murdoch, a British expat who mixed drinks at London nightspots Kitts, Rudy’s Revenge and Rubicon.
Singapore’s tax authority issued guidelines on how to tax bitcoin back in December, becoming one of the world’s first regulatory institutions to do so. The republic is also the base of digital currency startups, like payment processor GoCoin and Ripple Singapore, a bullion exchange using the Ripple network.
Source: http://www.coindesk.com/singapores-first-bitcoin-atm-due-march/

                                                   

                                                                                                       

These four charts suggest that Bitcoin will stabilize in the future

These four charts suggest that Bitcoin will stabilize in the future


In recent weeks, something interesting has happened to the price of bitcoins: It hasn't changed very much. In December, Bitcoin prices gyrated wildly, but since the start of the year it's gradually gotten less volatile.
Bitcoin's declining volatility is part of a recurring cycle the Bitcoin economy has experienced repeatedly over the past three years. It starts when a wave of publicity attracts new Bitcoin speculators and pushes Bitcoin prices to unprecedented highs. That creates an unsustainable price bubble. The bubble pops, leading to plummeting prices and high volatility. But then the price gradually stabilizes, settling on a "new normal" price.
This pattern suggests that the extreme price volatility that has bedeviled Bitcoin since its inception is likely to prove a temporary phenomenon. Bitcoin prices become volatile when a wave of media attention attracts a swarm of new users. As the Bitcoin economy grows and matures, these growing pains will become less frequent and less severe.z

Mainstream media coverage of Bitcoin began in April 2011, at a time when one Bitcoin went for around $0.75. The chart above shows that by June 2011, Bitcoin's price had risen 40-fold to more than $30. Then it crashed, falling below $2 in November before stabilizing at around $5 in early 2012.
Notice that after the initial boom and bust, Bitcoin's price gradually got more stable. In January and February of 2012, Bitcoin's price ranged from $3.87 to $7.22— a significant range but not the wild fluctuations of the previous year. In March, April, and May, the price stayed between $4.30 and $5.48.

In the second half of 2012, the pattern repeated itself, albeit on a smaller scale. In June, Bitcoin prices began to rise rapidly, reaching a high of $15.40 on Aug. 13. Then the currency promptly crashed, falling to a low of $7.58 before stabilizing around $13.50 in December 2012.


The pattern repeated itself yet again in the first three quarters of 2013. From $13.50 at the start of the year, Bitcoin's value soared to $266, then crashed to $50 later that same month. As summer turned to fall, the price of one Bitcoin had stabilized around $130.


Finally, here's a chart of Bitcoin prices over the last four months. The price rose from $130 to $1,242, then crashed to $455 before stabilizing around $900.
The cycle
Each of these four periods involves the same basic pattern:
1. Bitcoin gets a wave of positive press. This attracts new Bitcoin users who begin buying Bitcoins. The process becomes self-perpetuating: new users generate higher prices, which generates more press coverage, which attracts new users.
2. The bubble pops, usually triggered by some kind of bad news. Many of the Bitcoin newbies who had flooded into the market in the preceding weeks panic. That kicks off a feedback loop of its own: falling prices generate more panic selling, which pushes the price down even more.
3. Eventually, everyone who is inclined to panic-sell has done so, and the price bottoms out. Over the following weeks or months, there are a series of "aftershocks" as each price rise triggers a new wave of profit-taking. But each rise and fall is smaller than the one that preceded it.
4. Bitcoin's price stabilizes. Most of the bitcoins are in the hands of people who intend to hold them for the long term. With no price fluctuations to report on, press attention to the currency drops off. Bitcoins prices are relatively stable until the next boom begins.
Notice that each turn of the cycle has left Bitcoin's price significantly higher than it was before. From an early 2011 price of $0.75, the price stabilized at $5 in early 2012, at $13.50 in early 2013, at $130 in late 2013, and at $900 today.
Notice also that periods of price stability have never led to sudden price drops. So far, major price drops have only come on the heels of even larger price increases. Each crash has bottomed out above the price Bitcoin was at at the start of the preceding boom. The crash in mid-2013, for example, reached a low of $50, way above the price of $13.50 at the beginning of 2013.
The obvious explanation for this pattern is that each new wave of publicity has expanded the Bitcoin economy. In each boom, some new Bitcoin users speculate for a few weeks and then cash out, creating volatility. But a significant number of the newcomers in each wave stick around, permanently expanding demand for Bitcoins.
Of course, these cycles can't continue forever. The process depends on new people being drawn into the Bitcoin economy. If Bitcoin keeps growing, it won't be long before the currency is so widely known and used that there's little room for further growth.
Once that point is reached, we should expect Bitcoin's price to behave the way it does in stage 4 of the cycle, when waves of publicity aren't drawing new people into the Bitcoin economy. These are periods of price stability, like May 2012, September 2013 and right now, when the price doesn't change very much from day to day.
Of course, it's important to acknowledge that past performance is no guarantee of future results. The fact that Bitcoin's price has never collapsed after a period of price stability, and that price declines have never wiped out the gains from a preceding boom, doesn't mean these things could never happen.
Still, the longer the Bitcoin economy grows, the greater confidence users will have in its continued stability. And that has important implications for Bitcoin users. One is that volatility doesn't strike at random. If you're thinking about doing business in Bitcoins and you want to predict whether Bitcoin's price is likely to fall tomorrow, you just need to look at what happened in the past couple of weeks. If prices were stable in the recent past, they'll probably be stable in the near future too.
Second, when thinking about Bitcoin's long-term future, it's misleading to think about the average level of volatility in the past. That volatility mostly reflects the currency's rapid growth, not something inherent in the technology. It's mathematically impossible for Bitcoin's rapid growth to continue forever. Once it slows, there's good reason to think volatility will decline with it.
Source: http://www.washingtonpost.com/blogs/the-switch/wp/2014/02/03/these-four-charts-suggest-that-bitcoin-will-stabilize-in-the-future/