What is a 51% attack and how to detect it?
Despite being underpinned by blockchain technology that promises security, immutability, and complete transparency, many cryptocurrencies like Bitcoin SV (BSV), Litecoin (LTC) and Ethereum Classic (ETC) have been subject to 51% attacks several times in the past. While there are many mechanisms by which malicious entities can and have exploited blockchains, a 51% attack, or a […]
Monero community concerned as leading mining pool nears 51% of ecosystem's total hash rate
On Tuesday, privacy coin Monero (XMR) mining pool MineXMR’s hash rate surpassed over 1.4 GH/s, accounting for 44% of the hash rate of the XMR network. MineXMR has about 13,000 miners and charges a 1% pool fee. According to a screenshot from Archive.org last August, the pool only contributed to 34% of the hash rate […]
Bitcoin SV rocked by three 51% attacks in as many months
Bitcoin Satoshi’s Vision, the fork of another Bitcoin (BTC) fork, has for the third time in three months suffered a blockchain reorganization (reorg) attack. With a call to all stakeholders to mark the malicious network branch as invalid, Bitcoin SV (BSV) developers say the attacks have been repelled and all fraudulent chains identified. The flurry […]
Verge of disaster: 200 days transactions wiped from blockchain
Privacy-focused blockchain network Verge (XVG) has experienced a significant block reorganization, replacing transactions dating as far back as July 2020. Despite being described as potentially “the deepest reorg that has ever taken place in a top 100 cryptocurrency,” analysts are yet to confirm that the incident comprised a coordinated attack. Coinmetrics COO Antoine Le Calvez […]
Privacy-focused Firo cryptocurrency suffers 51% attack
Anonymous cryptocurrency Firo — formerly known as Zcoin— is the latest Proof-of-Work coin to suffer a 51% attack. Tweeting on Wednesday, Firo revealed that the protocol had come under a 51% attack and advised holders to pause all transactions until the network returns to a normal state. We are under 51% attack at the moment. […]