What is Petya the virus?

New ransomware attacked computers all over the world
27 June 2017   1385
Bitcoin

Is the first decentralized peer-to-peer payment network that is powered by its users with no central authority or middlemen.

Today, 27th of June, ransomware called Petya infected computers all over the globe. First countries under attack were Ukraine and Russia. It locks the computer and demands 300$ in Bitcoins to unlock it. 

petya logo
Petya's logo

Virus is known since 2016. It spreads thru spam, masks under the resume. Uninstructed user clicks on it, type-in the administarors' password, reboots the PC and gets blocked. 

In 2016, virus sent users to a deepweb site with instructions how to pay for unblocking. Now, only email is stated where user should write for further instructions. 

Today, virus infected, for example, computers of Russian banks, "Rosneft", and bunch of governmental institutes and big companies in Ukraine (Ukrainian Railways, Cabinet of Ministers, Boryspil Airport, UkrMail, Kiev Subway, Ukrenergo, banks and mobile operators).

Screenshot from injected PCScreenshot from infected PC

Specialists note that part of Petya, responsible for blocking, intercepts the management of the computer at the earliest stage of the download. It is written by highly qualified programmers.

The easiest way to secure your PC from ransomware is not open suspicious email. 

HashFlare Users to Face Withdrawal Issues

Looks like Bitcoin cloud mining is not super profitable
18 July 2018   130

Users of HashFlare mining pool can't withdraw their funds, while their contracts are threatened with a temporary ban. Even lower restrictions on withdrawal of funds in the amount of 0.03 BTC caused problems for users, but the service raised the threshold to 0.05 BTC and 0.1 ETH . This is reported by Cryptovest.

In addition, financial pyramids are often promoted under the guise of mining contracts for cloud mining. For last few months, there was a big jump in mining difficulty of many cryptocurrencies, so, old contacts had become unprofitable.

As reported, the reason for the locked funds dates back further - at the beginning of June, so much hashing power was flowing into the Bitcoin network that contracts saw all the mined coins go toward their maintenance fee.

Currently, more and more users who have purchased contracts at earlier stages are facing the fact that they can not withdraw their funds. One of them managed to return the money spent through the bank card operator after filing a corresponding complaint.

To anybody that purchased a Hashflare cloud mining contract with a credit card, it might be possible to get a refund with that credit card as one of my followers tipped me. He bought his contracts at the end of 2017.
 

bccponzi at Twitter

The hash rate of bitcoin increased from 13 EHash / s at the beginning of the year to more than 40 EHash / s in recent months. The difficulty of mining in the present conditions depends on the circumstances of the specific miner. The cost of bitcoin mining for some of them is $ 4,400, while others spend about $ 5,800. However, in 2018, cloudy mining is called an even more dubious occupation than before, especially when it comes to mining bitcoin.