CEX. IO Slow to Respond as Fears of 51% Attack Spread
As Ghash.io's total hashrate approaches the feared 51% mark, there has been no official word from the pool's operating exchange, CEX. IO. Data from Blockchain.info indicates that Ghash.io's hashrate has been fluctuating between 40% and 50% of the network's total over the course of the week. Jeffrey Smith, CIO of CEX. IO tweeted on 11th June that the company was planning to release an official statement. He also reassured bitcoiners that he was aware of the situation at hand and did not intend to harm the community. I want everyone to know - we are aware of the 51% on @ghash_io We would....
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The Bitcoin Network suffered from slow transactions due to a spam attack originating from a rogue wallet that was creating loops by sending bitcoins to itself over the blockchain. This Monday, the bitcoin community woke up to the beginning of a new week and a new month. As the day progresses, they thought that their worst fears about the bitcoin network are coming true. The bitcoin network was overloaded and transactions were taking unusually longer to get processed. The first question that went through everyone’s mind was whether the bitcoin network is under attack, but at first glance,....
It is not the first time UK hospitals are targeted by cyber criminals. Four different UK hospitals have been hit by a large-scale malware attack. Several thousands of files across these London hospitals are threatened by this malicious software. Barts, the largest NHS trust in England, is working on addressing the situation. Interestingly enough, it does not appear ransomware is used for this attack Moreover, there is no Bitcoin demand by the cyber criminals either. The attack against Barts health trust is rather disconcerting, as it is a major cyber attack against the UK hospital sector.....
BTC-e was down briefly on Sunday, following a powerful distributed denial of service (DDoS) attack against its servers. DDoS attacks against bitcoin exchanges have gained notoriety since the 'massive and concerted' attack which targeted multiple organisations earlier this year. However, in the current climate of uncertainty even a harmless attack can be misinterpreted, with speculation spreading like wildfire on social media. Luckily BTC-e was quick to confirm the attack and dismiss fears - it was just another DDoS attack, now all too common in the world of bitcoin. DDoS attack on our....
Georgia-based CampBX has been having issues with their service since at least Thursday of last week, according to tweets transmitted by the crypto-currency exchange. Beginning on the 3rd of July, the company took to social media to report that their service was dealing with a DDOS attack. For those unfamiliar, a DDOS is a distributed denial of service attack. An attack of this nature overwhelms a target server/s with requests, making the service slow or even unreachable by legitimate users. A D-DoS attack is in progress. We are working to mitigate it. - CampBX - Bitcoin (@CampBX) July 3,....
The number of reachable nodes has declined further following an "attack" that overloaded the bitcoin network. Last week, an unknown actor sent a deluge of spam that left bitcoin's nodes - the clients that store and relay transactions - with upwards of 88,000, or 1GB worth, waiting in their collective memory pool. As Jay Feldis from hardware node maker BitSeed explained to CoinDesk, many low-spec nodes simply could not keep up: "Eventually, the transaction backlog fills-up the RAM memory of the nodes. This causes the node computers to slow down dramatically or even freeze-up. If a node....