What is Petya the virus?

New ransomware attacked computers all over the world
27 June 2017   1616
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. 

Bear Market to Hit Mining Hard

BitMEX research division presented an analysis of the impact of market decline on the mining industry
11 December 2018   63

The cryptocurrency market has experienced a marked decline over the past weeks. The BitMEX research division presented an analysis of the impact of these events on the mining industry. Bitcoin hash rate has fallen by 31% since the beginning of November, which is equivalent to the capacity of 1.3 million Bitmain S9 devices. From this, BitMEX concludes that miners as a class are in a difficult situation, however, they may have different conditions, and those who pay more for electricity, are forced to turn off their equipment first, while others may still be quite viable.

The decrease in the price of Bitcoin by 45% since the beginning of November has already caused two recalculations of the complexity of mining to the lower side - by 7.4% and 15.1% on November 16 and December 3, respectively. The first recalculation turned out to be the largest since January 2013, the second - since October 2011.

Bitcoin mining revenue fell from $ 13 million per day in early November to $ 6 million per day in early December. The fall in the size of the miner's encouragement turned out to be even more rapid than the fall in the price of cryptocurrency. This is due to the delay in recalculating the complexity of mining. For the six-day period ending December 3, 21.8% fewer blocks were mined than expected, since the miners left the network before recalculating the difficulty. As a result, in addition to reducing the size of the miners' encouragement in dollar terms, due to lower asset prices, they received 21.8% less bitcoin awards.

One of the popular reasons for the recent decline in the cryptocurrency market is that miners sold bitcoins to cover their costs of hash warsin the Bitcoin Cash network. The monitoring platform Boltzmann recorded an unusually large sale of Bitcoin by the miner on November 12, that is, 3 days before the hard fork of Bitcoin Cash.

BitMEX assumes that the actions of miners over the past weeks could have played a significant role in reducing the market, however, recommends not overestimating their value and reminds that in a bearish trend, prices continue to fall regardless of asset movements and news.