Bitcoin has staged a dramatic comeback in the past two months, more than doubling its value against the dollar in that time and trading at record levels. The virtual currency was trading above $32 a share today after languishing in the mid-teens in January. The record was reached on t...
Zach Harvey has an ambitious plan to accelerate adoption of the Internet's favorite alternative currency: installing in thousands of bars, restaurants, and grocery stores ATMs that will let you buy Bitcoins anonymously. It's the opposite of a traditional automated teller that dispense...
Those using the Ruby on Rails web application framework on their websites are being advised to update the software immediately after multiple new vulnerabilities were found. It's the second time this month that Rails has been patched because of serious flaws. Ruby on Rails is an open-...
In a bid to harden Singapore's cyberdefense, the government has proposed upgrades to its Computer Misuse Act. To signify the change in tack, the Computer Misuse Act will be renamed Cybersecurity Act. The new Section 15A will now cover detection in addition to prevention and countering...
The Bitcoin scheme is a rare example of a large scale global payment system in which all the transactions are publicly accessible (but in an anonymous way). We downloaded the full history of this scheme, and analyzed many statistical properties of its associated transaction graph. In ...
More than three-quarters of the digital coins in the Bitcoin digital currency scheme aren't circulating because they remain dormant in user accounts that have never participated in outgoing transactions, a recently published study has found. The figure translates to more than 7.019 mi...
Bitfloor, a fast-growing Bitcoin exchange that was felled by a security breach earlier this month, has resumed operations. Founder Roman Shtylman announced the site's revival on Google Plus. The exchange lost Bitcoins valued at about $250,000 in the heist. As a result, Bitfloor was in...
Remember pirateat40, the e-currency banker we speculated could be the Bernie Madoff of Bitcoin? Well, it looks like he owes a lot of people money. On August 17, pirateat40 announced the closure of Bitcoin Savings & Trust, a virtual hedge fund that promised to pay high rewards to inves...
Those of you who have been around the Bitcoin block a time or two have probably heard of, and even used, BitInstant. BitInstant is a service that provides the ability to transfer funds between Bitcoin and governmental currencies much more quickly than would otherwise be possible. They...
Four former customers have sued the virtual currency exchange Bitcoinica, claiming that it owes them $460,457 (£293,080) in funds they previously deposited. Bitcoinica was hacked twice in 2012, with attackers stealing over $177,000 worth of BitCoins. The website ceased operation in Ma...
