In mid-February, Silk Road 2.0 announced that it had lost nearly 4,500 BTC (around $2.6 million) to a transaction malleability attack. As the unofficial successor to the original Silk Road marketplace, which was busted by federal authorities in October of 2013, Silk Road 2.0 was already suffering from serious credibility issues. Not surprisingly, many assumed […]

In a research paper titled “Bitcoin Transaction Malleability and MtGox” posted to the arXiv archive yesterday, authors Christian Decker and Roger Wattenhofer determined that Mt.Gox could not have lost 850,000 bitcoins through a transaction malleability glitch in the site’s code. Instead, the researchers note that an attack of that scale has never taken place, and […]

In a statement released earlier today, Mt.Gox announced plans unfreeze customer accounts “soon.” The announcement follows a terrible week for Mt.Gox, as Bitcoin prices on the troubled exchange tumbled to $220 over the weekend, over $400 lower than the values on the other major exchanges. On Saturday, Mt.Gox froze internal trading on the site while […]

Last week’s transaction malleability scare made international headlines, once again bringing Bitcoin into the mainstream news. It was the cited cause of the total collapse of Silk Road 2.0, the glitch that forced both Mt.Gox and Bitstamp to freeze user accounts for a few days, and it put massive downward pressure on global Bitcoin value. […]

The latest incarnation of Bitcoin black market site Silk Road had been hit by the same “transaction malleability” glitch that recently took down Mt.Gox and Bitstamp. A message from site administrator “Defcon” was leaked to Reddit yesterday outlining the issues on Silk Road. According to the email, no account information was hacked, and all of […]

Thanks to a prolonged distributed denial-of-service attack, Bitcoin exchange Bitstamp suspended withdrawals late Tuesday. The world’s third-largest Bitcoin exchange joins the long-troubled MtGox exchange in the fallout over the “transaction malleability” bug in the Bitcoin code. Speaking with Bloomberg News, Blockchain.info’s chief security officer Andreas Antonopoulos characterized the DDoS attacks as “a nuisance” aimed at […]

Following an already rough week of falling prices, Forbes reports that Bitcoin suffered another blow yesterday after the detection of a “massive and concerted” distributed denial of service (DDoS) attack on the block chain and related software. The attack focuses on a vulnerability known as “transaction malleability,” which allows records of transactions to be changed, […]