Tag Archives: 51% Attack

A 51% attack occurs when a single network miner or group of miners controls more than half of a blockchain network’s hash rate. Theoretically, this would enable the attacker to block transactions from taking place in the blockchain, alter the sequence of new transactions, and potentially revert past transactions (referred to as “double spending”) by tampering with blockchain data. However, a recent study indicates that executing such attacks is financially unviable within the...

Bitcoin SV is getting bogged down after a majority hash power began mining blocks that don’t include any transactions.  In response to the event, the Bitcoin Association has contacted all relevant exchanges to freeze the block rewards associated with the attack.  Explaining the Empty Block Attack As told by Todd Price – Curriculum Specialist for the Bitcoin Association – most Bitcoin SV blocks currently don’t include any transactions. By contrast, the network’s mempool –...

Ethereum Classic has been in the wars again with a second 51% attack within a week. This incursion has brought the security of the network under the spotlight again, though ETC prices remain largely unmoved at the time of writing.Earlier today, August 6, Etherchain.org tweeted that its Ethermine affiliated mining pool had disabled ETC pool payouts after more than 4,000 blocks had been reorganized.Today another large 51% attack occurred on the #ETC which caused a reorganization of over 4000...

The Bitcoin Gold network reportedly underwent a ‘long-chain attack,’ also known as a 51 percent attack. But the development team claims that it promptly fended off the hostile takeover. The team also supplied mining pools and crypto exchanges with the latest version of BTG Core.Bitcoin Gold Dev Team Thwarts Network Takeover AttemptOn Friday, July 10, the Bitcoin Gold team detected an ‘extremely long chain of over 1300 blocks’. The attackers had been mining this counterfeit chain since July 1...

A group of miners controlling 70% of the decentralized network PegNet hash rate manipulated the price of a Japanese Yen-pegged stablecoin dubbed pJPY. By submitting false data, they managed to artificially inflate a wallet balance of $11 up to $6.7 million but couldn’t liquidate the assets later. Miners Manipulate A Stablecoin’s Price Built on top of the Factom protocol, PegNet is a decentralized network allowing users to trade stablecoins pegged to fiat currencies, commodities, and other...

Bitcoin Gold (BTG) was victimized over the weekend when malicious miners overtook its blockchain as a means of performing a 51 percent attack.A 51 Percent Attack Can Be Very DangerousThe miners saw to it that approximately $72,000 in BTG funds were double spent. This is money in their pockets after they gained control of the network’s hash rate. They performed two separate attacks on the network; the first saw them net gains of approximately $19,000 while the second earned them more than...

New information indicates that Bitcoin Gold experienced a 51% attack last week. A total amount of over $70,000 was double-spent, which raises questions regarding its security since this is the second similar attack on the network.51% Attack On Bitcoin GoldA 51% attack occurs when a single organization or entity takes control of the majority of a particular network’s hash rate. Once its executed, the perpetrators have control over the transactions to modify the ordering, prevent them from...

After experiencing a nasty 51 percent attack roughly one year ago, Vertcoin has been subjected to another such attack on its blockchain.Vertcoin: The Victim Once Again51 percent attacks occur when hackers secretly infiltrate a specific blockchain and then begin mining their own chain through the ledger. Granted the attacker has enough mining power under his or her belt, their chain can potentially overtake the ledger originally governed by the cryptocurrency or company in question.After a...