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Cash – or crash? Tips and tricks for using Bitcoin safely

Despite the heists against Bitcoin sites, plus high-profile law-enforcement actions against ‘dark market’ sites such as Silk Road, which conducted transactions in Bitcoin, the currency is soaring. We asked ESET experts, and finance advisors, for tips on how to stay safe.

Five alternatives to Bitcoin

Here’s a small selection of alternatives to Bitcoin – each of which has its own advantages. All of them share Bitcoin’s fundamental strengths, however – minimal or zero transfer fees, and freedom from traditional banking restrictions.

Bitcoin wallet phishing scores unlikely hit with crypto-curious

A new tactic where waves of Bitcoin wallet phishing emails are targeted at corporations has proved a success for the criminals behind it – with nearly 2.7% of victims clicking on the malicious link embedded in the two waves of 12,000 emails.

Silk Road 2.0 drug market hit, millions stolen from bitcoin reserve

A large scale cyber-theft has drained the relaunched ‘online drug bazaar’ Silk Road 2.0 of nearly all of its Bitcoin reserves – estimated to be worth $2 million or even more. The site relied on bitcoin to help anonymize transactions.

Bitcoin heist nets cybercriminals $1 million after huge DDoS “smokescreen”

A large-scale “heist” targeting Bitcoin site BIPS led to the theft of $1 million in Bitcoin – the second such major attack this month. BIPS was blasted with a massive DDoS attack two days before the theft on November 15.

Bitcoin fixes Mt Gox theft bug – as exchange staff find 200,000 BTC in ‘forgotten’ wallet

Bitcoin’s developers have released a new version of the software, which includes a long-awaited fix for the “transaction malleability” bug which is said to have brought down the Mt Gox exchange – and Mt Gox staff have ‘found’ 200,000 BTC in an abandoned wallet in the exchange.

Bitcoin wallets “at risk” due to Android security flaw

A security flaw has left all Android Bitcoin wallets vulnerable to theft, Bitcoin.org has warned. The vulnerability affects all Bitcoin wallets on the Android plaform.

Police close in on Bitcoin fraudsters who stole $370m in Mt Gox collapse

Police are closing in on thieves who stole Bitcoin valued at $370 million during the collapse of popular exchange Mt Gox – and just 1% of the theft is believed to be the work of outside hackers.

10 tips for protecting your virtual Bitcoin wallet

There have been some high-profile Bitcoin thefts recently. Here are 10 tips on protecting your virtual bitcoin wallet.

Mt Gox exchange ‘disappears’ amid rumors of $350m Bitcoin heist – biggest in history

Trading has been suspended on the Bitcoin exchange Mt Gox and its website has closed, amid rumors that the exchange has lost 744,000 Bitcoins in an online theft – worth around $350 million at Monday’s trading prices, according to Wired

Bitcoin bank Flexcoin shuts down after attackers loot $570,000 from “hot wallet”

The attackers were able to steal all the bitcoins stored in the bank’s “hot wallet” – the portion of its funds on computers accessible via the internet – due to a transaction flaw in its code.

Bitcoin creator – could he be ‘outed’ after email ransom?

Bitcoin’s mysterious creator, who goes by the pseudonym ‘Satoshi Nakamoto’, could be about to have his identity made public, after a series of emails from the address that has been his only point of contact with the world since 2011.

Surveillance cameras hijacked to mine Bitcoin while watching you

Malware written specifically for DVR recorders used for the output of surveillance cameras has forced some machines to mine Bitcoin – although the low-powered machines are ‘very bad’ miners, Wired points out.

Mt Gox site code “posted online” as exchange admits $500m in bitcoin is lost

Bitcoin exchange Mt Gox has admitted that nearly $500 million in bitcoin has “disappeared”, in a new statement posted online – as chunks of computer code have appeared on Pastebin which appear to be part of the backend for the site.

Outdated Bitcoin mining software loses miners thousands

Bitcoin has issued an urgent warning that very recent transactions could be invalid, due to a glitch with older mining software that could cause Bitcoins to be double-spent.

Bitcoin extortion letters threaten pizza restaurants

Extorted for Bitcoin? Some U.S. pizza restaurant owners have been receiving letters threatening them with bad reviews, fake pizza orders, food contamination and, in extreme cases, even bombs.

Bitstamp hacked for $5 million in Bitcoin

19,000 Bitcoin – valued at around $275 each, so $5 million together – have been stolen from a majour European Bitcoin exchange, reports RT.

Bitcoin community ‘needs to collaborate’ over security and scalability

In an open letter to members of its own community, Bitcoin developers and contributors have called for greater cooperation over security and scalability.

$40k of bitcoin lost in Coinapult hot wallet hack

Coinapult, a long-running bitcoin wallet service, announced on Monday that its hot wallet had been compromised to the tune of 150 coins – around $42,900.

Bitcoin hack can reveal IP addresses of anonymous transactions

The infamous anonymity of Bitcoin as a currency has a weakness built into it, according to a paper published by the University of Luxembourg.

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