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A cryptocurrency, crypto-currency, or crypto [a] is a digital currency designed to work through a computer network that is not reliant on any central authority, such as a government or bank, to uphold or maintain it.
The hack worsened an already ongoing cryptocurrency selloff by an additional $42 billion. [19] On July 9, 2018, the exchange Bancor, whose code and fundraising had been subjects of controversy, had $23.5 million in cryptocurrency stolen. [20] [21] Zaif US$60 million in Bitcoin, Bitcoin Cash and Monacoin was stolen in September 2018 [22]
The legal status of cryptocurrencies varies substantially from one jurisdiction to another, and is still undefined or changing in many of them. [1] Whereas, in the majority of countries the usage of cryptocurrency isn't in itself illegal, its status and usability as a means of payment (or a commodity) varies, with differing regulatory implications.
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Cryptojacking is the act of exploiting a computer to mine cryptocurrencies, often through websites, [1] [2] [3] against the user's will or while the user is unaware. [4] One notable piece of software used for cryptojacking was Coinhive, which was used in over two-thirds of cryptojacks before its March 2019 shutdown. [5]
A cryptocurrency wallet is a device, [1] physical medium, [2] program or an online service which stores the public and/or private keys [3] for cryptocurrency transactions. In addition to this basic function of storing the keys, a cryptocurrency wallet more often offers the functionality of encrypting and/or signing information. [ 4 ]