Tuesday, May 16, 2017

GEEK'S GOLD What is Bitcoin, what is its price and value, and how much are the NHS cyber attack ransomware hackers demanding?

THE controversial computer currency Bitcoin that’s worth more than gold is central to the global cyber attacks that struck the NHS.

As it stands (May 15) a single bitcoin is worth $1,768 (£1,369) while a troy ounce of gold is worth $1,227 (£950). Here’s all you need to know…
The value of Bitcoin surged at the beginning of 2017 

What is Bitcoin?

Bitcoin is a virtual currency which was created in 2009 by an unknown person using the alias Satoshi Nakamoto.

Transactions are made without middle men, so there are no transaction fees and no need to give your real name.

More businesses are beginning to accept them and in some parts of the world you can even buy pizza with bitcoins.

You can set up a virtual wallet on the internet to keep you bitcoins in

You can set up a virtual wallet websites like Blockchain to store,  keep track and spend your digital money.

You are also able to purchase Bitcoin through an online exchange or Bitcoin ATM.

To find merchants that accepts Bitcoin in the UK click here.

Bitcoins aren’t printed, like pounds, dollars or euros – they’re produced by people, and increasingly businesses, running computers all around the world.

It’s the first example of a growing category of money known as cryptocurrency.

Bitcoin is attractive to some users because of its anonymity, as well as its lack of government control.

The website Silk Road was closed in 2013 following raids by the FBI and other agencies amid allegations of drug dealing with authorities seizing millions of dollars worth of Bitcoin during the raids.

How much are the NHS cyber attack ransomware hackers demanding?

The biggest cyber attack in the history of the NHS caused “significant problems” with IT systems and telephone networks across NHS trusts in England and Scotland.

Hackers encrypted files demanding NHS staff pay ransoms of $300 (£233) per computer via the digital currency service Bitcoin to regain access.

They warned the sum would be doubled if it was not paid within three days.

Criminal gangs have been known to send out thousands of these emails, called phishing scams, in the hope that just a few people will click on them. That’s all it takes to spread the virus.

Ransomware notices come with a link where the victim can deposit bitcoin.

In the case of the NHS, the virus could block access to patient data and operation schedules.

In the wake of the problem many hospitals and doctors surgeries had no choice but to cancel routine appointments and divert ambulances to neighbouring unaffected hospitals.

How does Bitcoin work?

The value of Bitcoin, like all currencies, is determined by how much people are willing to exchange it for.

To process Bitcoin transactions, a procedure called ‘mining’ must take place, which involves a computer solving a difficult mathematical problem with a 64-digit solution.

For each problem solved, one block of Bitcoins is processed.

In addition the miner is rewarded with new bitcoins.

To compensate for the growing power of computer chips, the difficulty of the puzzles is adjusted to ensure a steady stream of new bitcoins are produced each day.

There are currently about 15 million in existence.

It was created by someone using the alias Satoshi Nakamoto

The bitcoin protocol – the rules that make bitcoin work – say that only 21 million bitcoins can ever be created by miners.

However, these coins can be divided into smaller parts with the smallest divisible amount one hundred millionth of a bitcoin.

This is called a “Satoshi”, after the founder.

To receive a Bitcoin, a user must have a Bitcoin address – a string of 27-34 letters and numbers – which acts as a kind of virtual post-box to and from which the Bitcoins are sent.

Since there is no register of these addresses, people can use them to protect their anonymity when making a transaction.

These addresses are in turn stored in Bitcoin wallets, which are used to manage savings.

Where can I buy Bitcoin and how much is it worth?

Several marketplaces called “bitcoin exchanges” allow people to buy or sell bitcoins using different currencies.

Japan-based Mt. Gox is the largest bitcoin exchange. It was launched in July 2010, and by 2013 was handling 70% of all bitcoin transactions.

People can also send bitcoins to each other using mobile apps or their computers in the same way people send cash digitally.

The value of Bitcoin has reached a record high.

A single unit of the cryptocurrency has exceeded the value of an ounce of gold.

It currently stands at $1,759 (£1,367) while a troy ounce of gold is worth $1,227  (£950)

The previous highs this year have been attributed to surging demand in China, where authorities warn it is used to channel money out of the country.

Its’ USP – the anonymity – could eventually prove its downfall

Is Bitcoin the future of online trading?

No one knows what will become of Bitcoin as it is mostly unregulated, but that could change as governments are concerned about taxation and their lack of control over it.

So its’ USP – the anonymity – could eventually prove its downfall.

While it keeps Bitcoin users’ transactions private, it also lets them buy or sell anything without easily tracing it back to them.

That’s why it has become the currency of choice for people online buying drugs or other illicit activities.

And not many governments will put up with that for long.

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