scholarly journals A Recapitalization on Crypto jacking and end to end Analysis of Ransomware Attacks

The recent trend of today’s digital media is the usage of poisoned website to mine crypto currencies, these currencies are alternatives to traditional currencies which work based on decentralization, bit coin was the first currency to be establish in this way, crypto currencies are protected with block chain which can be simplified as growing chain. This block chain is managed by peer to peer network, based upon this blockchain network crypto jacking takes place, and hence cryptojacking is mining of one's digital currencies without their knowledge, hackers find cryptojacking more profitable because they are a lotcheaper and safe than compared to other digital thefts. Tracking and finding the cause of theft becomes very hard in this method because mining kits can be purchased at a very cheap cost. There are primarily two methods to be followed to get to the computer and to perform cryptojacking, one is to run a infected code on the host computer and the other is to make the user click the content with threat but widely both will be used for increased profit outcome. In this paper an overview of crypto currencies, method of decentralization, various mining techniques followed and different types of cybercrimes prevalent are discussed.

2019 ◽  
Vol 16 (2) ◽  
pp. 786-792
Author(s):  
Sasi Kala K. Rani ◽  
D. Ramya ◽  
D. Gokul ◽  
C. Sibiya ◽  
S. Sreya

Bitcoin is the worldwide crypto currency and it is the digital payment system known as the decentralized digital currency. All the transactions are recorded in a public ledger known as block chain. It has no central authority or no single administrator. This paper studies about the technical view of the bitcoin system, the problems faced in the peer-to-peer network, schemes used for improving the quality of transactions, and also the security issues faced by the user while proceeding with these transactions. It includes the major advantages of bitcoin transactions and its worldwide usage. The other side of bitcoin includes the usage of it in ransom ware attack and in other illegal activities. Finally this paper also comprises why bitcoin is not widely accepted in India.


2021 ◽  
Vol Volume 17, Issue 4 ◽  
Author(s):  
Massimo Bartoletti ◽  
Letterio Galletta ◽  
Maurizio Murgia

Decentralized blockchain platforms have enabled the secure exchange of crypto-assets without the intermediation of trusted authorities. To this purpose, these platforms rely on a peer-to-peer network of byzantine nodes, which collaboratively maintain an append-only ledger of transactions, called blockchain. Transactions represent the actions required by users, e.g. the transfer of some units of crypto-currency to another user, or the execution of a smart contract which distributes crypto-assets according to its internal logic. Part of the nodes of the peer-to-peer network compete to append transactions to the blockchain. To do so, they group the transactions sent by users into blocks, and update their view of the blockchain state by executing these transactions in the chosen order. Once a block of transactions is appended to the blockchain, the other nodes validate it, re-executing the transactions in the same order. The serial execution of transactions does not take advantage of the multi-core architecture of modern processors, so contributing to limit the throughput. In this paper we develop a theory of transaction parallelism for blockchains, which is based on static analysis of transactions and smart contracts. We illustrate how blockchain nodes can use our theory to parallelize the execution of transactions. Initial experiments on Ethereum show that our technique can improve the performance of nodes.


2021 ◽  
Author(s):  
Pol Alemany ◽  
Ricard Vilalta ◽  
Raul Muñoz ◽  
Ramon Casellas ◽  
Ricardo Martínez

2014 ◽  
Vol 24 (8) ◽  
pp. 2132-2150
Author(s):  
Hong-Yan MEI ◽  
Yu-Jie ZHANG ◽  
Xiang-Wu MENG ◽  
Wen-Ming MA

2013 ◽  
Vol 9 ◽  
pp. 215-225 ◽  
Author(s):  
Tadeu Classe ◽  
Regina Braga ◽  
Fernanda Campos ◽  
José Maria N. David

2018 ◽  
Vol 26 ◽  
pp. 1180-1192 ◽  
Author(s):  
Atin Angrish ◽  
Benjamin Craver ◽  
Mahmud Hasan ◽  
Binil Starly

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