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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]
The Bitfinex cryptocurrency exchange was hacked in August 2016. [1] 119,756 bitcoins, worth about US$72 million at the time, were stolen.[1]In February 2022, the US government recovered and seized a portion of the stolen bitcoin, then worth US$3.6 billion, [2] by decrypting a file owned by Ilya Lichtenstein (born 1989) that contained addresses and private keys associated with the stolen funds. [3]
GPU mining is the use of Graphics Processing Units (GPUs) to "mine" proof-of-work cryptocurrencies, such as Bitcoin. [1] Miners receive rewards for performing computationally intensive work, such as calculating hashes, that amend and verify transactions on an open and decentralized ledger.
A major bitcoin exchange, Bitfinex, was compromised by the 2016 Bitfinex hack, when nearly 120,000 bitcoins (around US$71 million) were stolen in 2016. [63] Bitfinex was forced to suspend its trading. The theft was the second-largest bitcoin heist ever, dwarfed only by the Mt. Gox theft in 2014.
Bitcoin (abbreviation: BTC; sign: ₿) is the first decentralized cryptocurrency. Based on a free-market ideology, bitcoin was invented in 2008 by Satoshi Nakamoto, an unknown entity (person or persons). [5] Use of bitcoin as a currency began in 2009, [6] with the release of its open-source implementation.
On November 9, 2021, a raid on his Gainesville, Georgia, home resulted in the seizure of about 50,676 bitcoin, then valued at over $3.36 billion. [8] Zhong cooperated with investigators, forfeited all of his bitcoin and pled guilty to one count of wire fraud. [9] In April 2023, Zhong was sentenced to a year and a day in prison. [1]
Back was born in London, England, in July 1970. [1] His first computer was a Sinclair ZX81.He taught himself Basic, and spent his time reverse engineering video games, finding decryption keys in software packages.
Blender.io is a cryptocurrency mixer that was established in 2017. [1] In 2022, it was sanctioned by the Office of Foreign Assets Control of the U.S. Department of the Treasury for allegedly aiding the Lazarus Group, a hacking group associated with the government of North Korea.